| 时间 | 平滑内在无风险收益率 | 预期股权回报 |
| 2004 | 12.17% | 21.08% |
| 2005 | 10.78% | 22.13% |
| 2006 | 10.40% | 14.30% |
| 2007 | 11.09% | 12.22% |
| 2008 | 11.93% | 14.86% |
| 2009 | 12.18% | 13.91% |
| 2010 | 12.69% | 14.71% |
| 2011 | 13.28% | 15.83% |
| 2012 | 13.50% | 16.12% |
| 2013 | 13.41% | 16.57% |
| 2014 | 12.93% | 15.21% |
| 2015 | 12.44% | 14.85% |
| 2016 | 11.89% | 14.89% |
| 2017 | 10.85% | 14.56% |
| 2018 | 10.17% | 14.54% |
| 2019 | 10.20% | 13.92% |