| 年度 | 实际值 |
|---|---|
| 1992 | 223.28 |
| 1993 | 225.94 |
| 1994 | 228.56 |
| 1995 | 231.18 |
| 1996 | 233.8 |
| 1997 | 236.24 |
| 1998 | 238.59 |
| 1999 | 242.45 |
| 2000 | 246.59 |
| 2001 | 246.98 |
| 2002 | 247.92 |
| 2003 | 249 |
| 2004 | 249.59 |
| 2005 | 250.42 |
| 2006 | 251.71 |
| 2007 | 254.06 |
| 2008 | 256.13 |
| 2009 | |
| 2010 | 260.89 |
| 2011 | 262.8 |
| 2012 | 264.8 |
| 2013 | 267.2 |
| 2014 | |
| 2015 | 272.8 |
| 2016 | 274 |
| 2017 | 276 |
| 2018 | 276 |