| 年份 | 内在无风险收益率 | 平滑后内在无风险收益率 | 无风险收益率 |
| 2004 | 6.50% | 5.83% | 4.24% |
| 2005 | 6.90% | 5.97% | 4.39% |
| 2006 | 6.10% | 5.90% | 4.71% |
| 2007 | 4.70% | 5.70% | 4.04% |
| 2008 | 3.70% | 5.46% | 2.25% |
| 2009 | -2.90% | 4.45% | 3.85% |
| 2010 | 4.20% | 4.13% | 3.30% |
| 2011 | 4.80% | 4.23% | 1.89% |
| 2012 | 4.30% | 4.33% | 1.78% |
| 2013 | 3.30% | 4.14% | 3.04% |