| 年度 | 实际值 |
|---|---|
| 1992 | 77.3 |
| 1993 | |
| 1994 | |
| 1995 | 79.4 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 83.9 |
| 2000 | 84.8 |
| 2001 | 85.3116 |
| 2002 | 85.8378 |
| 2003 | 86.1319 |
| 2004 | 86.7758 |
| 2005 | 87.7272 |
| 2006 | 89.2348 |
| 2007 | 90.2053 |
| 2008 | 92.3685 |
| 2009 | 93.7448 |
| 2010 | 97 |
| 2011 | 99 |
| 2012 | 99 |
| 2013 | 98 |
| 2014 | 98 |
| 2015 | 99 |
| 2016 | 100 |
| 2017 | 99 |