| 年度 | 实际值 |
|---|---|
| 1992 | 70.63 |
| 1993 | 71.36 |
| 1994 | 72.42 |
| 1995 | 73.35 |
| 1996 | 74.14 |
| 1997 | 75.16 |
| 1998 | 76.15 |
| 1999 | 76.88 |
| 2000 | 77.76 |
| 2001 | 78.09 |
| 2002 | 78.75 |
| 2003 | 78.34 |
| 2004 | 78.55 |
| 2005 | 82.89 |
| 2006 | 83.47 |
| 2007 | 84.23 |
| 2008 | 84.8 |
| 2009 | |
| 2010 | 85.38 |
| 2011 | 86.4 |
| 2012 | 86.7 |
| 2013 | 87.3 |
| 2014 | 87 |
| 2015 | 87.47 |
| 2016 | 170 |
| 2017 | 171 |
| 2018 | 171 |