| 年度 | 实际值 |
|---|---|
| 1992 | 70.46 |
| 1993 | 72.85 |
| 1994 | 76.47 |
| 1995 | 78.38 |
| 1996 | 80.91 |
| 1997 | 82.65 |
| 1998 | 84.74 |
| 1999 | 86.67 |
| 2000 | 87.66 |
| 2001 | 89.04 |
| 2002 | 91.25 |
| 2003 | 92.56 |
| 2004 | 93.53 |
| 2005 | 95.29 |
| 2006 | 97.2 |
| 2007 | 99.26 |
| 2008 | 100.71 |
| 2009 | |
| 2010 | 101.86 |
| 2011 | 104.7 |
| 2012 | 104 |
| 2013 | 97.9 |
| 2014 | 110 |
| 2015 | 110.4 |
| 2016 | 111 |
| 2017 | 111 |
| 2018 | 111 |