| 年度 | 实际值 |
|---|---|
| 1992 | 86 |
| 1993 | |
| 1994 | |
| 1995 | 88.1 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 89.96 |
| 2000 | 916679 |
| 2001 | 916070 |
| 2002 | 86.2789 |
| 2003 | 81.6086 |
| 2004 | 82.2098 |
| 2005 | 82.0917 |
| 2006 | 82.45 |
| 2007 | 83.83 |
| 2008 | 86.02 |
| 2009 | 86.8784 |
| 2010 | 88.0962 |
| 2011 | 89.005 |
| 2012 | 89.7 |
| 2013 | 89.55 |
| 2014 | 90.79 |
| 2015 | 78.73 |
| 2016 | 72.46 |