| 年度 | 实际值 |
|---|---|
| 1992 | 40.63 |
| 1993 | 41.04 |
| 1994 | 41.59 |
| 1995 | 42.34 |
| 1996 | 133.73 |
| 1997 | 134.43 |
| 1998 | 139.09 |
| 1999 | 135.91 |
| 2000 | 136.94 |
| 2001 | 137.62 |
| 2002 | 138.64 |
| 2003 | 139.51 |
| 2004 | 139.77 |
| 2005 | 141.32 |
| 2006 | 142.27 |
| 2007 | 143.9 |
| 2008 | 144.65 |
| 2009 | |
| 2010 | 145.53 |
| 2011 | 147.2 |
| 2012 | 148.7 |
| 2013 | 149.5 |
| 2014 | 149.9 |
| 2015 | 150.08 |
| 2016 | 151 |
| 2017 | 152 |
| 2018 | 152 |