| 年度 | 实际值 |
|---|---|
| 1992 | 342 |
| 1993 | 353 |
| 1994 | 142 |
| 1995 | 143 |
| 1996 | 144 |
| 1997 | 144 |
| 1998 | 144 |
| 1999 | 144 |
| 2000 | 144 |
| 2001 | 142 |
| 2002 | 143 |
| 2003 | 143.85 |
| 2004 | 144.34 |
| 2005 | 145.14 |
| 2006 | 146.33 |
| 2007 | 147.32 |
| 2008 | 148.24 |
| 2009 | |
| 2010 | 149.15 |
| 2011 | 147.11 |
| 2012 | 146.09 |
| 2013 | 146.41 |
| 2014 | 146.52 |
| 2015 | 146.03 |