| 年度 | 实际值 |
|---|---|
| 1994 | 85.36 |
| 1995 | 86.71 |
| 1996 | 87.99 |
| 1997 | 89.18 |
| 1998 | 89.74 |
| 1999 | 90.48 |
| 2000 | 91.6 |
| 2001 | 92.64 |
| 2002 | 93.32 |
| 2003 | 93.38 |
| 2004 | 93.79 |
| 2005 | 94.31 |
| 2006 | 96.39 |
| 2007 | 97.59 |
| 2008 | 98.32 |
| 2009 | |
| 2010 | 99.18 |
| 2011 | 99.1 |
| 2012 | 98.5 |
| 2013 | 98.4 |
| 2014 | 99 |
| 2015 | 94.14 |
| 2016 | 98 |
| 2017 | 97 |
| 2018 | 97 |