| 年度 | 实际值 |
|---|---|
| 1992 | 210 |
| 1993 | 212 |
| 1994 | 214 |
| 1995 | 218 |
| 1996 | 223 |
| 1997 | 227 |
| 1998 | 230 |
| 1999 | 232 |
| 2000 | 223.91 |
| 2001 | 238 |
| 2002 | 240 |
| 2003 | 241.42 |
| 2004 | 242.91 |
| 2005 | 244.48 |
| 2006 | 245.38 |
| 2007 | 247.06 |
| 2008 | 248.77 |
| 2009 | |
| 2010 | 255.4 |
| 2011 | 256.6 |
| 2012 | 262.51 |
| 2013 | 264.75 |
| 2014 | 255.31 |
| 2015 | 257.06 |