| 年度 | 实际值 |
|---|---|
| 1992 | 118 |
| 1993 | |
| 1994 | |
| 1995 | 120 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 122 |
| 2000 | 122.37 |
| 2001 | 122.4 |
| 2002 | 122.37 |
| 2003 | 122.24 |
| 2004 | 122.53 |
| 2005 | 125.64 |
| 2006 | 126.62 |
| 2007 | 127.58 |
| 2008 | 128.92 |
| 2009 | 129.69 |
| 2010 | 130.45 |
| 2011 | 130.62 |
| 2012 | 130.78 |
| 2013 | 127.6 |
| 2014 | 127.52 |
| 2015 | 126.32 |
| 2016 | 125.5 |
| 2017 | 123.6 |
| 2018 | 122.9647 |