| 年度 | 实际值 |
|---|---|
| 1992 | 190 |
| 1993 | 193 |
| 1994 | 195 |
| 1995 | 201 |
| 1996 | 205 |
| 1997 | 208 |
| 1998 | 211 |
| 1999 | 213 |
| 2000 | 217 |
| 2001 | 221 |
| 2002 | 225 |
| 2003 | 231.06 |
| 2004 | 237.32 |
| 2005 | 239.53 |
| 2006 | 245.53 |
| 2007 | 251.01 |
| 2008 | 256 |
| 2009 | |
| 2010 | 259.51 |
| 2011 | 264.07 |
| 2012 | 264.07 |
| 2013 | 267.08 |
| 2014 | 265.22 |
| 2015 | 266.3 |