| 年度 | 实际值 |
|---|---|
| 1992 | 135.52 |
| 1993 | 78.97 |
| 1994 | 80.33 |
| 1995 | 81.71 |
| 1996 | 83.07 |
| 1997 | 84.78 |
| 1998 | 85.89 |
| 1999 | 86.96 |
| 2000 | 87.5 |
| 2001 | 88.02 |
| 2002 | 88.2 |
| 2003 | 89.5 |
| 2004 | 89.06 |
| 2005 | 89.3 |
| 2006 | 92.03 |
| 2007 | 93.42 |
| 2008 | 93.86 |
| 2009 | |
| 2010 | 96.82 |
| 2011 | 95.6 |
| 2012 | 95.7 |
| 2013 | 96 |
| 2014 | 96.9 |
| 2015 | 97.34 |
| 2016 | 96 |
| 2017 | 96 |
| 2018 | 96 |