| 年度 | 实际值 |
|---|---|
| 1992 | 159 |
| 1993 | 160 |
| 1994 | 161 |
| 1995 | 164 |
| 1996 | 147 |
| 1997 | 148 |
| 1998 | 148 |
| 1999 | 149 |
| 2000 | 150 |
| 2001 | 150 |
| 2002 | 151 |
| 2003 | 150.51 |
| 2004 | 150.65 |
| 2005 | 150.57 |
| 2006 | 150.93 |
| 2007 | 151.81 |
| 2008 | 152.81 |
| 2009 | |
| 2010 | 164.91 |
| 2011 | 154.88 |
| 2012 | 156.46 |
| 2013 | 158.71 |
| 2014 | 161.12 |
| 2015 | 162.09 |