| Year | Number of Portfolio | Asset balance (billion yuan) | Weighted average rate of return of the year (%) |
| 2007 | 212 | 15.463 | 41.00 |
| 2008 | 588 | 97.490 | −1.83 |
| 2009 | 1049 | 159.102 | 7.78 |
| 2010 | 1504 | 245.298 | 3.41 |
| 2011 | 1882 | 332.548 | −0.78 |
| 2012 | 2210 | 445.162 | 5.68 |
| 2013 | 2519 | 578.360 | 3.67 |
| 2014 | 2740 | 740.286 | 9.30 |
| 2015 | 2993 | 926.030 | 9.88 |
| 2016 | 3207 | 1075.622 | 3.03 |
| 2017 | 3568 | 1253.757 | 5.00 |
| 2018 | 3929 | 1450.221 | 3.01 |
| 2019 | 4327 | 1768.996 | 8.30 |
| 2020 | 4633 | 2214.957 | 10.31 |
| 2021 | 4965 | 2607.744 | 5.33 |
| Annual average rate of return | - | - | 7.17 |