| 年度 | 实际值 |
|---|---|
| 1992 | 231 |
| 1993 | 234 |
| 1994 | 236 |
| 1995 | 144 |
| 1996 | 115 |
| 1997 | 116 |
| 1998 | 119 |
| 1999 | 121 |
| 2000 | 121 |
| 2001 | 123 |
| 2002 | 124 |
| 2003 | 124.18 |
| 2004 | 124.65 |
| 2005 | 123.95 |
| 2006 | 125.3 |
| 2007 | 128.22 |
| 2008 | 130.23 |
| 2009 | |
| 2010 | 133.28 |
| 2011 | 133.08 |
| 2012 | 131.97 |
| 2013 | 136.13 |
| 2014 | 138.41 |
| 2015 | 139.07 |