https://en.wikipedia.org/wiki/S%26P_500
当然，历史不代表未来。这个问题10年前已经在这个坛子讨论个天翻地覆了。到底市场未来回报率是多少，天知道。就不重复了。
这是70年代到现在的每年回报率。
| -17.37% |
| -29.72% |
| 31.55% |
| 19.15% |
| -11.50% |
| 1.06% |
| 12.31% |
| 25.77% |
| -9.73% |
| 14.76% |
| 17.27% |
| 1.40% |
| 26.33% |
| 14.62% |
| 2.03% |
| 12.40% |
| 27.25% |
| -6.56% |
| 26.31% |
| 4.46% |
| 7.06% |
| -1.54% |
| 34.11% |
| 20.26% |
| 31.01% |
| 26.67% |
| 19.53% |
| -10.14% |
| -13.04% |
| -23.37% |
| 26.38% |
| 8.99% |
| 3.00% |
| 13.62% |
| 3.53% |
| -38.49% |
| 23.45% |
| 12.78% |
| 0.00% |
| 13.41% |
| 29.60% |
| 11.39% |
