| 年度 | 实际值 |
|---|---|
| 1992 | 153.68 |
| 1993 | 154.84 |
| 1994 | 155.38 |
| 1995 | 155.5 |
| 1996 | 155.62 |
| 1997 | 156.26 |
| 1998 | 156.3 |
| 1999 | 156.69 |
| 2000 | 157.1 |
| 2001 | 156.46 |
| 2002 | 156.57 |
| 2003 | 156.58 |
| 2004 | 156.56 |
| 2005 | 156.4 |
| 2006 | 156.18 |
| 2007 | 155.97 |
| 2008 | 155.66 |
| 2009 | |
| 2010 | 154.6 |
| 2011 | 154.3 |
| 2012 | 153.2 |
| 2013 | 152.3 |
| 2014 | |
| 2015 | 151.21 |
| 2016 | 150 |
| 2017 | 148 |
| 2018 | 146 |