| 序号 | 贡献率 | 累计贡献率 |
| 1 | 34.1995 | 34.1995 |
| 2 | 20.6334 | 54.8329 |
| 3 | 10.3264 | 72.1593 |
| 4 | 9.6921 | 82.8514 |
| 5 | 7.6234 | 91.4838 |
| 6 | 4.3269 | 96.8107 |
| 7 | 3.1893 | 100 |