| 年度 | 实际值 |
|---|---|
| 1992 | 103 |
| 1993 | |
| 1994 | |
| 1995 | 103.4 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 103.7 |
| 2000 | 103.6 |
| 2001 | 103 |
| 2002 | 102.8 |
| 2003 | 102 |
| 2004 | 102 |
| 2005 | 101 |
| 2006 | 101 |
| 2007 | 100.65 |
| 2008 | 100.12 |
| 2009 | 99.84 |
| 2010 | 99.86 |
| 2011 | 99.99 |
| 2012 | 99.97 |
| 2013 | 100.06 |
| 2014 | 100.16 |
| 2015 | 100.04 |
| 2016 | 100.1 |
| 2017 | 99.8 |
| 2018 | 99.59 |