| 年度 | 实际值 |
|---|---|
| 1992 | 218.36 |
| 1993 | 219.6 |
| 1994 | 221.61 |
| 1995 | 226.14 |
| 1996 | 230.56 |
| 1997 | 230.06 |
| 1998 | 225.88 |
| 1999 | 225.96 |
| 2000 | 224.53 |
| 2001 | 225.2 |
| 2002 | 225.81 |
| 2003 | 226.22 |
| 2004 | 226.39 |
| 2005 | 226.31 |
| 2006 | 226.87 |
| 2007 | 226.91 |
| 2008 | 227.16 |
| 2009 | 226.81 |
| 2010 | 226.12 |
| 2011 | 226 |
| 2012 | 224.6 |
| 2013 | 222.3 |
| 2014 | 222.19 |
| 2015 | 221.1 |
| 2016 | 220 |
| 2017 | 217 |
| 2018 | 216 |