| 年度 | 实际值 |
|---|---|
| 1992 | 142.21 |
| 1993 | 143.29 |
| 1994 | 144.27 |
| 1995 | 145.3 |
| 1996 | 146.13 |
| 1997 | 147.02 |
| 1998 | 81.19 |
| 1999 | 75.65 |
| 2000 | 77.4 |
| 2001 | 77.92 |
| 2002 | 78.89 |
| 2003 | 80.53 |
| 2004 | 81.9 |
| 2005 | 81.82 |
| 2006 | 83.2 |
| 2007 | 84.32 |
| 2008 | 84.59 |
| 2009 | |
| 2010 | 84.97 |
| 2011 | 86.2 |
| 2012 | 86.9 |
| 2013 | 87.1 |
| 2014 | 88.1 |
| 2015 | 88.29 |
| 2016 | 89 |
| 2017 | 89 |
| 2018 | 89 |