| 年度 | 实际值 |
|---|---|
| 1992 | 87 |
| 1993 | |
| 1994 | |
| 1995 | 87.7 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 89.4 |
| 2000 | 89.7 |
| 2001 | 89.9 |
| 2002 | 89.9 |
| 2003 | 89.9 |
| 2004 | 90 |
| 2005 | 89.8 |
| 2006 | 89.8 |
| 2007 | 90.08 |
| 2008 | 90.3 |
| 2009 | 90.9 |
| 2010 | 91.4 |
| 2011 | 91.8 |
| 2012 | 91.9 |
| 2013 | 92.5 |
| 2014 | 93 |
| 2015 | 93.7 |
| 2016 | 94.4179 |
| 2017 | 94.7 |
| 2018 | 95.4835 |