If you invested $100 in the S&P 500 at the beginning of 1929, you would have about $1,116.17 at the end of 1958, assuming you reinvested all dividends. This is a return on investment of 1,016.17%, or 8.37% per year.
This lump-sum investment beats inflation during this period for an inflation-adjusted return of about 560.43% cumulatively, or 6.49% per year.
If you used dollar-cost averaging (monthly) instead of a lump-sum investment, you'd have $1,164.69.
The graph below shows the performance of $100 over time if invested in an S&P 500 index fund. The returns assume that all dividends are automatically reinvested.
The nominal return on investment of $100 is $1,016.17, or 1,016.17%. This means by 1958 you would have $1,116.17 in your pocket.
However, it's important to take into account the effect of inflation when considering an investment and especially a long-term investment. You can convert S&P returns to their real (inflation-adjusted) value using an inflation calculation based on the U.S. Bureau of Labor Statistics Consumer Price Index (CPI).
In the case of the returns described above, the CPI in 1929 was 17.100 and the CPI in 1958 was 28.900.
The ratio between these CPIs describes how relative buying power of a dollar has changed over 29 years.
Adjusted for inflation, the $1,116.17 nominal end value of the original $100 investment would have a real return of roughly $560.43 in 1929 dollars. This means the inflation-adjusted return is 560.43% as opposed to the original 1,016.17%.
The table below shows the full dataset pertaining to a $100 investment, including gains and losses over the 360-month period between 1929 and 1958.
Note that data shown is the monthly average closing price. Returns include dividends.
Year
Month
Return (%)
Amount ($)
CPI
1929
1
0.81%
100.81
17.10
1929
2
2.05%
102.88
17.10
1929
3
-0.30%
102.57
17.00
1929
4
1.80%
104.41
16.90
1929
5
2.20%
106.71
17.00
1929
6
9.20%
116.53
17.10
1929
7
5.96%
123.47
17.30
1929
8
4.24%
128.71
17.30
1929
9
-10.32%
115.42
17.30
1929
10
-26.19%
85.19
17.30
1929
11
4.37%
88.92
17.30
1929
12
1.83%
90.54
17.20
1930
1
6.64%
96.55
17.10
1930
2
4.12%
100.53
17.00
1930
3
6.69%
107.25
16.90
1930
4
-5.65%
101.19
17.00
1930
5
-9.77%
91.31
16.90
1930
6
-1.76%
89.70
16.80
1930
7
-0.90%
88.89
16.60
1930
8
0.34%
89.20
16.50
1930
9
-13.37%
77.27
16.60
1930
10
-6.80%
72.02
16.50
1930
11
-6.19%
67.56
16.40
1930
12
3.56%
69.97
16.10
1931
1
8.14%
75.66
15.90
1931
2
2.38%
77.46
15.70
1931
3
-9.08%
70.43
15.60
1931
4
-9.16%
63.98
15.50
1931
5
-2.68%
62.26
15.30
1931
6
3.86%
64.66
15.10
1931
7
-2.49%
63.06
15.10
1931
8
-14.37%
54.00
15.10
1931
9
-12.75%
47.11
15.00
1931
10
2.05%
48.08
14.90
1931
11
-18.10%
39.38
14.70
1931
12
-0.85%
39.04
14.60
1932
1
-0.05%
39.03
14.30
1932
2
1.14%
39.47
14.10
1932
3
-23.22%
30.30
14.00
1932
4
-11.31%
26.87
13.90
1932
5
-12.39%
23.54
13.70
1932
6
6.18%
25.00
13.60
1932
7
51.35%
37.84
13.60
1932
8
10.37%
41.76
13.50
1932
9
-13.22%
36.24
13.40
1932
10
-0.34%
36.12
13.30
1932
11
-2.64%
35.17
13.20
1932
12
4.57%
36.77
13.10
1933
1
-11.27%
32.63
12.90
1933
2
0.33%
32.74
12.70
1933
3
11.24%
36.42
12.60
1933
4
29.32%
47.10
12.60
1933
5
17.58%
55.38
12.60
1933
6
8.46%
60.07
12.70
1933
7
-4.64%
57.28
13.10
1933
8
-0.48%
57.00
13.20
1933
9
-9.38%
51.66
13.20
1933
10
2.80%
53.10
13.20
1933
11
2.32%
54.34
13.20
1933
12
6.08%
57.64
13.20
1934
1
7.75%
62.11
13.20
1934
2
-4.80%
59.13
13.30
1934
3
2.02%
60.32
13.30
1934
4
-9.83%
54.39
13.30
1934
5
1.70%
55.32
13.30
1934
6
-4.36%
52.91
13.40
1934
7
-3.51%
51.05
13.40
1934
8
-2.01%
50.03
13.40
1934
9
1.21%
50.63
13.60
1934
10
3.21%
52.26
13.50
1934
11
1.06%
52.81
13.50
1934
12
0.40%
53.02
13.40
1935
1
-2.62%
51.64
13.60
1935
2
-5.93%
48.57
13.70
1935
3
7.94%
52.43
13.70
1935
4
8.27%
56.76
13.80
1935
5
4.17%
59.13
13.80
1935
6
5.60%
62.44
13.70
1935
7
7.10%
66.88
13.70
1935
8
2.43%
68.51
13.70
1935
9
2.99%
70.55
13.70
1935
10
9.71%
77.40
13.70
1935
11
0.29%
77.63
13.80
1935
12
5.82%
82.15
13.80
1936
1
6.03%
87.10
13.80
1936
2
2.41%
89.21
13.80
1936
3
0.41%
89.58
13.70
1936
4
-5.02%
85.08
13.70
1936
5
4.57%
88.97
13.70
1936
6
6.23%
94.52
13.80
1936
7
2.30%
96.69
13.90
1936
8
1.44%
98.08
14.00
1936
9
5.55%
103.53
14.00
1936
10
3.10%
106.74
14.00
1936
11
-1.40%
105.25
14.00
1936
12
3.46%
108.89
14.00
1937
1
3.30%
112.48
14.10
1937
2
0.23%
112.74
14.10
1937
3
-5.62%
106.40
14.20
1937
4
-4.09%
102.05
14.30
1937
5
-3.34%
98.64
14.40
1937
6
6.39%
104.95
14.40
1937
7
1.44%
106.46
14.50
1937
8
-13.76%
91.81
14.50
1937
9
-14.10%
78.86
14.60
1937
10
-8.27%
72.35
14.60
1937
11
-1.02%
71.61
14.50
1937
12
3.24%
73.93
14.40
1938
1
-1.80%
72.59
14.20
1938
2
-6.02%
68.22
14.10
1938
3
-3.44%
65.88
14.10
1938
4
1.56%
66.90
14.20
1938
5
2.93%
68.86
14.10
1938
6
20.49%
82.97
14.10
1938
7
1.06%
83.85
14.10
1938
8
-4.08%
80.42
14.10
1938
9
11.62%
89.77
14.10
1938
10
0.47%
90.18
14.00
1938
11
-2.55%
87.88
14.00
1938
12
-1.16%
86.86
14.00
1939
1
-0.46%
86.47
14.00
1939
2
0.27%
86.70
13.90
1939
3
-12.24%
76.08
13.90
1939
4
4.10%
79.20
13.80
1939
5
2.17%
80.92
13.80
1939
6
2.84%
83.21
13.80
1939
7
-1.07%
82.33
13.80
1939
8
11.06%
91.43
13.80
1939
9
1.38%
92.69
14.10
1939
10
-1.41%
91.39
14.00
1939
11
-1.97%
89.58
14.00
1939
12
-0.15%
89.45
14.00
1940
1
-0.23%
89.25
13.90
1940
2
-0.15%
89.12
14.00
1940
3
1.42%
90.38
14.00
1940
4
-13.34%
78.33
14.00
1940
5
-8.09%
71.99
14.00
1940
6
3.87%
74.77
14.10
1940
7
2.65%
76.75
14.00
1940
8
4.76%
80.40
14.00
1940
9
1.47%
81.58
14.00
1940
10
2.85%
83.91
14.00
1940
11
-3.59%
80.90
14.00
1940
12
0.72%
81.48
14.10
1941
1
-5.72%
76.81
14.10
1941
2
1.18%
77.72
14.10
1941
3
-2.55%
75.74
14.20
1941
4
-1.59%
74.54
14.30
1941
5
4.11%
77.60
14.40
1941
6
5.71%
82.03
14.70
1941
7
0.08%
82.09
14.70
1941
8
0.86%
82.80
14.90
1941
9
-3.43%
79.96
15.10
1941
10
-4.08%
76.69
15.30
1941
11
-5.88%
72.18
15.40
1941
12
2.62%
74.07
15.50
1942
1
-2.48%
72.23
15.70
1942
2
-4.76%
68.79
15.80
1942
3
-3.45%
66.42
16.00
1942
4
1.87%
67.66
16.10
1942
5
5.75%
71.55
16.30
1942
6
4.38%
74.68
16.30
1942
7
0.05%
74.72
16.40
1942
8
1.66%
75.96
16.50
1942
9
7.97%
82.01
16.50
1942
10
2.15%
83.78
16.70
1942
11
1.06%
84.66
16.80
1942
12
6.50%
90.17
16.90
1943
1
6.43%
95.97
16.90
1943
2
4.01%
99.82
16.90
1943
3
3.79%
103.60
17.20
1943
4
4.36%
108.13
17.40
1943
5
2.18%
110.48
17.50
1943
6
2.47%
113.21
17.50
1943
7
-4.54%
108.08
17.40
1943
8
2.55%
110.83
17.30
1943
9
-0.50%
110.28
17.40
1943
10
-4.21%
105.64
17.40
1943
11
1.77%
107.51
17.40
1943
12
3.67%
111.45
17.40
1944
1
-0.24%
111.18
17.40
1944
2
3.24%
114.78
17.40
1944
3
-1.31%
113.28
17.40
1944
4
2.20%
115.78
17.50
1944
5
5.14%
121.73
17.50
1944
6
3.02%
125.40
17.60
1944
7
-1.06%
124.08
17.70
1944
8
-1.23%
122.56
17.70
1944
9
2.88%
126.10
17.70
1944
10
-0.28%
125.74
17.70
1944
11
2.60%
129.01
17.70
1944
12
3.38%
133.37
17.80
1945
1
3.73%
138.35
17.80
1945
2
0.31%
138.79
17.80
1945
3
2.90%
142.81
17.80
1945
4
4.16%
148.76
17.80
1945
5
2.19%
152.01
17.90
1945
6
-1.70%
149.43
18.10
1945
7
0.71%
150.49
18.10
1945
8
7.18%
161.29
18.10
1945
9
4.51%
168.57
18.10
1945
10
3.61%
174.65
18.10
1945
11
2.02%
178.19
18.10
1945
12
4.30%
185.85
18.20
1946
1
0.59%
186.94
18.20
1946
2
-2.68%
181.93
18.10
1946
3
6.77%
194.25
18.30
1946
4
0.52%
195.25
18.40
1946
5
-0.34%
194.59
18.50
1946
6
-2.55%
189.63
18.70
1946
7
-1.62%
186.56
19.80
1946
8
-14.42%
159.65
20.20
1946
9
-1.87%
156.66
20.40
1946
10
-0.01%
156.64
20.80
1946
11
3.39%
161.96
21.30
1946
12
0.92%
163.45
21.50
1947
1
4.27%
170.43
21.50
1947
2
-3.67%
164.17
21.50
1947
3
-3.30%
158.75
21.90
1947
4
-1.36%
156.59
21.90
1947
5
3.92%
162.73
21.90
1947
6
6.69%
173.62
22.00
1947
7
-1.56%
170.91
22.20
1947
8
-2.17%
167.21
22.50
1947
9
3.03%
172.27
23.00
1947
10
-0.73%
171.01
23.00
1947
11
-1.12%
169.10
23.10
1947
12
-0.86%
167.63
23.40
1948
1
-4.45%
160.18
23.70
1948
2
1.92%
163.25
23.50
1948
3
8.19%
176.62
23.40
1948
4
5.33%
186.03
23.80
1948
5
4.59%
194.56
23.90
1948
6
-1.96%
190.76
24.10
1948
7
-2.49%
186.01
24.40
1948
8
-0.68%
184.75
24.50
1948
9
3.19%
190.64
24.50
1948
10
-5.10%
180.91
24.40
1948
11
-0.16%
180.63
24.20
1948
12
1.63%
183.57
24.10
1949
1
-3.33%
177.46
24.00
1949
2
1.49%
180.11
23.80
1949
3
0.41%
180.85
23.80
1949
4
-0.18%
180.52
23.90
1949
5
-4.91%
171.65
23.80
1949
6
6.26%
182.41
23.90
1949
7
4.17%
190.01
23.70
1949
8
1.87%
193.57
23.80
1949
9
3.14%
199.65
23.90
1949
10
1.95%
203.54
23.70
1949
11
3.24%
210.14
23.80
1949
12
2.63%
215.66
23.60
1950
1
2.52%
221.10
23.50
1950
2
1.38%
224.14
23.50
1950
3
3.39%
231.73
23.60
1950
4
3.91%
240.80
23.60
1950
5
2.16%
246.02
23.70
1950
6
-6.72%
229.48
23.80
1950
7
6.64%
244.71
24.10
1950
8
4.11%
254.76
24.30
1950
9
4.72%
266.79
24.40
1950
10
0.38%
267.79
24.60
1950
11
0.19%
268.31
24.70
1950
12
8.01%
289.81
25.00
1951
1
4.31%
302.30
25.40
1951
2
-1.11%
298.94
25.70
1951
3
1.93%
304.70
25.80
1951
4
0.63%
306.61
25.80
1951
5
-1.15%
303.10
25.90
1951
6
2.37%
310.27
25.90
1951
7
4.97%
325.68
25.90
1951
8
3.14%
335.89
25.90
1951
9
0.03%
335.99
26.10
1951
10
-2.25%
328.42
26.20
1951
11
3.61%
340.28
26.40
1951
12
3.83%
353.33
26.50
1952
1
-1.33%
348.62
26.50
1952
2
0.75%
351.24
26.30
1952
3
0.20%
351.95
26.30
1952
4
0.46%
353.57
26.40
1952
5
3.24%
365.04
26.40
1952
6
3.37%
377.33
26.50
1952
7
0.88%
380.65
26.70
1952
8
-1.11%
376.43
26.70
1952
9
-1.61%
370.37
26.70
1952
10
3.67%
383.95
26.70
1952
11
4.51%
401.27
26.70
1952
12
0.99%
405.23
26.70
1953
1
-0.77%
402.10
26.60
1953
2
0.96%
405.95
26.50
1953
3
-4.47%
387.79
26.60
1953
4
1.00%
391.68
26.60
1953
5
-3.11%
379.51
26.70
1953
6
1.91%
386.77
26.80
1953
7
0.90%
390.25
26.80
1953
8
-4.11%
374.22
26.90
1953
9
3.52%
387.38
26.90
1953
10
2.71%
397.87
27.00
1953
11
1.84%
405.18
26.90
1953
12
3.02%
417.43
26.90
1954
1
2.68%
428.60
26.90
1954
2
2.58%
439.67
26.90
1954
3
4.45%
459.24
26.90
1954
4
4.42%
479.55
26.80
1954
5
1.22%
485.41
26.90
1954
6
4.46%
507.05
26.90
1954
7
2.39%
519.19
26.90
1954
8
2.74%
533.41
26.90
1954
9
2.71%
547.87
26.80
1954
10
4.30%
571.44
26.80
1954
11
4.95%
599.75
26.80
1954
12
2.17%
612.75
26.70
1955
1
3.70%
635.46
26.70
1955
2
-0.44%
632.68
26.70
1955
3
3.81%
656.78
26.70
1955
4
-0.08%
656.26
26.70
1955
5
6.15%
696.59
26.70
1955
6
7.64%
749.83
26.70
1955
7
-0.30%
747.59
26.80
1955
8
4.82%
783.60
26.80
1955
9
-4.72%
746.57
26.90
1955
10
7.07%
799.33
26.90
1955
11
1.24%
809.22
26.90
1955
12
-2.39%
789.89
26.80
1956
1
0.95%
797.39
26.80
1956
2
7.21%
854.85
26.80
1956
3
1.48%
867.53
26.80
1956
4
-2.84%
842.91
26.90
1956
5
-0.26%
840.70
27.00
1956
6
5.75%
889.03
27.20
1956
7
-0.28%
886.50
27.40
1956
8
-3.09%
859.11
27.30
1956
9
-0.95%
850.92
27.40
1956
10
-0.71%
844.86
27.50
1956
11
1.81%
860.14
27.50
1956
12
-1.86%
844.12
27.60
1957
1
-4.00%
810.39
27.60
1957
2
1.62%
823.52
27.70
1957
3
2.64%
845.30
27.80
1957
4
4.16%
880.46
27.90
1957
5
1.95%
897.67
28.00
1957
6
2.32%
918.52
28.10
1957
7
-5.21%
870.71
28.30
1957
8
-3.74%
838.15
28.30
1957
9
-5.90%
788.72
28.30
1957
10
-1.80%
774.52
28.30
1957
11
0.32%
776.99
28.40
1957
12
2.33%
795.08
28.40
1958
1
0.70%
800.66
28.60
1958
2
2.42%
820.03
28.60
1958
3
0.90%
827.38
28.80
1958
4
3.56%
856.82
28.90
1958
5
2.74%
880.25
28.90
1958
6
3.07%
907.28
28.90
1958
7
4.05%
944.07
29.00
1958
8
2.94%
971.86
28.90
1958
9
4.36%
1,014.22
28.90
1958
10
3.33%
1,047.96
28.90
1958
11
2.16%
1,070.62
29.00
1958
12
4.25%
1,116.17
28.90
Click to show 342 more rows
Remember, returns are based on the average closing price across the entire month. Some losses are offset by dividend returns.
Dollar-cost averaging
Dollar-cost averaging is an alternative to investing the full lump-sum of $100.00 up-front. Instead, the capital is invested over a period of time.
Consider a strategy in which $100.00 was invested in the S&P 500 over a period of no more than 24 months beginning in 1929. This would result in a final amount of $1,164.69, including dividend reinvestments. In this particular case, dollar-cost average returns are greater than the returns of a lump-sum investment (which ends with $1,116.17).
Year
Month
Contribution ($)
Amount ($)
1929
1
4.16
4.18
1929
2
4.16
8.50
1929
3
4.16
12.61
1929
4
4.16
17.06
1929
5
4.16
21.67
1929
6
4.16
28.20
1929
7
4.16
34.28
1929
8
4.16
40.06
1929
9
4.16
39.64
1929
10
4.16
32.32
1929
11
4.16
38.06
1929
12
4.16
42.97
1930
1
4.16
50.24
1930
2
4.16
56.63
1930
3
4.16
64.84
1930
4
4.16
65.09
1930
5
4.16
62.47
1930
6
4.16
65.44
1930
7
4.16
68.96
1930
8
4.16
73.36
1930
9
4.16
67.14
1930
10
4.16
66.43
1930
11
4.16
66.20
1930
12
4.32
73.01
1931
1
-
78.95
1931
2
-
80.83
1931
3
-
73.49
1931
4
-
66.76
1931
5
-
64.97
1931
6
-
67.48
1931
7
-
65.80
1931
8
-
56.34
1931
9
-
49.16
1931
10
-
50.17
1931
11
-
41.09
1931
12
-
40.74
1932
1
-
40.72
1932
2
-
41.19
1932
3
-
31.62
1932
4
-
28.04
1932
5
-
24.57
1932
6
-
26.09
1932
7
-
39.48
1932
8
-
43.58
1932
9
-
37.82
1932
10
-
37.69
1932
11
-
36.70
1932
12
-
38.37
1933
1
-
34.05
1933
2
-
34.16
1933
3
-
38.00
1933
4
-
49.15
1933
5
-
57.79
1933
6
-
62.68
1933
7
-
59.77
1933
8
-
59.48
1933
9
-
53.90
1933
10
-
55.41
1933
11
-
56.70
1933
12
-
60.15
1934
1
-
64.81
1934
2
-
61.70
1934
3
-
62.94
1934
4
-
56.76
1934
5
-
57.73
1934
6
-
55.21
1934
7
-
53.27
1934
8
-
52.20
1934
9
-
52.83
1934
10
-
54.53
1934
11
-
55.11
1934
12
-
55.33
1935
1
-
53.88
1935
2
-
50.68
1935
3
-
54.71
1935
4
-
59.23
1935
5
-
61.70
1935
6
-
65.16
1935
7
-
69.79
1935
8
-
71.48
1935
9
-
73.62
1935
10
-
80.77
1935
11
-
81.00
1935
12
-
85.72
1936
1
-
90.89
1936
2
-
93.08
1936
3
-
93.47
1936
4
-
88.78
1936
5
-
92.84
1936
6
-
98.63
1936
7
-
100.89
1936
8
-
102.35
1936
9
-
108.03
1936
10
-
111.38
1936
11
-
109.82
1936
12
-
113.62
1937
1
-
117.37
1937
2
-
117.64
1937
3
-
111.02
1937
4
-
106.49
1937
5
-
102.93
1937
6
-
109.51
1937
7
-
111.09
1937
8
-
95.80
1937
9
-
82.29
1937
10
-
75.49
1937
11
-
74.72
1937
12
-
77.14
1938
1
-
75.75
1938
2
-
71.19
1938
3
-
68.74
1938
4
-
69.81
1938
5
-
71.86
1938
6
-
86.58
1938
7
-
87.49
1938
8
-
83.92
1938
9
-
93.67
1938
10
-
94.10
1938
11
-
91.70
1938
12
-
90.64
1939
1
-
90.22
1939
2
-
90.46
1939
3
-
79.39
1939
4
-
82.64
1939
5
-
84.44
1939
6
-
86.83
1939
7
-
85.91
1939
8
-
95.40
1939
9
-
96.72
1939
10
-
95.36
1939
11
-
93.48
1939
12
-
93.34
1940
1
-
93.13
1940
2
-
92.99
1940
3
-
94.31
1940
4
-
81.73
1940
5
-
75.11
1940
6
-
78.02
1940
7
-
80.09
1940
8
-
83.90
1940
9
-
85.13
1940
10
-
87.55
1940
11
-
84.41
1940
12
-
85.02
1941
1
-
80.15
1941
2
-
81.10
1941
3
-
79.03
1941
4
-
77.78
1941
5
-
80.97
1941
6
-
85.60
1941
7
-
85.66
1941
8
-
86.40
1941
9
-
83.43
1941
10
-
80.03
1941
11
-
75.32
1941
12
-
77.29
1942
1
-
75.37
1942
2
-
71.78
1942
3
-
69.30
1942
4
-
70.60
1942
5
-
74.66
1942
6
-
77.93
1942
7
-
77.97
1942
8
-
79.26
1942
9
-
85.58
1942
10
-
87.42
1942
11
-
88.34
1942
12
-
94.09
1943
1
-
100.14
1943
2
-
104.16
1943
3
-
108.11
1943
4
-
112.83
1943
5
-
115.28
1943
6
-
118.14
1943
7
-
112.77
1943
8
-
115.65
1943
9
-
115.07
1943
10
-
110.23
1943
11
-
112.18
1943
12
-
116.30
1944
1
-
116.01
1944
2
-
119.77
1944
3
-
118.21
1944
4
-
120.81
1944
5
-
127.02
1944
6
-
130.86
1944
7
-
129.48
1944
8
-
127.89
1944
9
-
131.58
1944
10
-
131.20
1944
11
-
134.61
1944
12
-
139.17
1945
1
-
144.37
1945
2
-
144.82
1945
3
-
149.02
1945
4
-
155.22
1945
5
-
158.62
1945
6
-
155.93
1945
7
-
157.03
1945
8
-
168.30
1945
9
-
175.90
1945
10
-
182.24
1945
11
-
185.93
1945
12
-
193.93
1946
1
-
195.06
1946
2
-
189.84
1946
3
-
202.69
1946
4
-
203.74
1946
5
-
203.05
1946
6
-
197.88
1946
7
-
194.67
1946
8
-
166.59
1946
9
-
163.47
1946
10
-
163.45
1946
11
-
169.00
1946
12
-
170.55
1947
1
-
177.83
1947
2
-
171.30
1947
3
-
165.65
1947
4
-
163.40
1947
5
-
169.80
1947
6
-
181.17
1947
7
-
178.34
1947
8
-
174.48
1947
9
-
179.76
1947
10
-
178.45
1947
11
-
176.45
1947
12
-
174.92
1948
1
-
167.14
1948
2
-
170.35
1948
3
-
184.29
1948
4
-
194.12
1948
5
-
203.02
1948
6
-
199.05
1948
7
-
194.09
1948
8
-
192.78
1948
9
-
198.93
1948
10
-
188.78
1948
11
-
188.48
1948
12
-
191.55
1949
1
-
185.18
1949
2
-
187.94
1949
3
-
188.72
1949
4
-
188.37
1949
5
-
179.12
1949
6
-
190.34
1949
7
-
198.27
1949
8
-
201.98
1949
9
-
208.33
1949
10
-
212.39
1949
11
-
219.27
1949
12
-
225.04
1950
1
-
230.71
1950
2
-
233.89
1950
3
-
241.81
1950
4
-
251.27
1950
5
-
256.71
1950
6
-
239.45
1950
7
-
255.35
1950
8
-
265.84
1950
9
-
278.39
1950
10
-
279.43
1950
11
-
279.98
1950
12
-
302.41
1951
1
-
315.44
1951
2
-
311.93
1951
3
-
317.94
1951
4
-
319.94
1951
5
-
316.28
1951
6
-
323.76
1951
7
-
339.84
1951
8
-
350.50
1951
9
-
350.59
1951
10
-
342.69
1951
11
-
355.08
1951
12
-
368.69
1952
1
-
363.78
1952
2
-
366.51
1952
3
-
367.25
1952
4
-
368.94
1952
5
-
380.91
1952
6
-
393.73
1952
7
-
397.20
1952
8
-
392.80
1952
9
-
386.47
1952
10
-
400.64
1952
11
-
418.71
1952
12
-
422.85
1953
1
-
419.58
1953
2
-
423.59
1953
3
-
404.65
1953
4
-
408.71
1953
5
-
396.00
1953
6
-
403.58
1953
7
-
407.21
1953
8
-
390.49
1953
9
-
404.22
1953
10
-
415.17
1953
11
-
422.79
1953
12
-
435.58
1954
1
-
447.23
1954
2
-
458.78
1954
3
-
479.20
1954
4
-
500.39
1954
5
-
506.51
1954
6
-
529.09
1954
7
-
541.76
1954
8
-
556.60
1954
9
-
571.69
1954
10
-
596.29
1954
11
-
625.82
1954
12
-
639.39
1955
1
-
663.08
1955
2
-
660.19
1955
3
-
685.33
1955
4
-
684.79
1955
5
-
726.87
1955
6
-
782.43
1955
7
-
780.09
1955
8
-
817.66
1955
9
-
779.03
1955
10
-
834.08
1955
11
-
844.40
1955
12
-
824.23
1956
1
-
832.06
1956
2
-
892.02
1956
3
-
905.24
1956
4
-
879.55
1956
5
-
877.24
1956
6
-
927.68
1956
7
-
925.03
1956
8
-
896.46
1956
9
-
887.91
1956
10
-
881.59
1956
11
-
897.53
1956
12
-
880.82
1957
1
-
845.62
1957
2
-
859.32
1957
3
-
882.05
1957
4
-
918.74
1957
5
-
936.69
1957
6
-
958.45
1957
7
-
908.56
1957
8
-
874.58
1957
9
-
823.01
1957
10
-
808.19
1957
11
-
810.76
1957
12
-
829.64
1958
1
-
835.47
1958
2
-
855.68
1958
3
-
863.35
1958
4
-
894.06
1958
5
-
918.52
1958
6
-
946.72
1958
7
-
985.11
1958
8
-
1,014.11
1958
9
-
1,058.31
1958
10
-
1,093.51
1958
11
-
1,117.16
1958
12
-
1,164.69
Click to show 342 more rows
Data Sources
The information on this page is derived from Robert Shiller's book, Irrational Exuberance and the accompanying dataset, as well as the U.S. Bureau of Labor Statistics' monthly CPI logs.
Note that S&P index value for the current quarter is based on a moving average of closing prices, per Robert Shiller's methodology. The inflation data used is based on annual CPI averages.
About the author
Ian Webster is an engineer and data expert based in San Mateo, California. He has worked for Google, NASA, and consulted for governments around the world on data pipelines and data analysis. Disappointed by the lack of clear resources on the impacts of inflation on economic indicators, Ian believes this website serves as a valuable public tool. Ian earned his degree in Computer Science from Dartmouth College.
