| 年度 | 实际值 |
|---|---|
| 1992 | 147 |
| 1993 | 148 |
| 1994 | 148 |
| 1995 | 149 |
| 1996 | 149 |
| 1997 | 151 |
| 1998 | 149 |
| 1999 | 149 |
| 2000 | 150 |
| 2001 | 150 |
| 2002 | 150 |
| 2003 | 149.8 |
| 2004 | 149.23 |
| 2005 | 149.83 |
| 2006 | 150.46 |
| 2007 | 150.89 |
| 2008 | 151.27 |
| 2009 | |
| 2010 | 150.96 |
| 2011 | 151.02 |
| 2012 | 150.17 |
| 2013 | 150.32 |
| 2014 | 150.6 |
| 2015 | 152.92 |