| 年度 | 实际值 |
|---|---|
| 1992 | 172.63 |
| 1993 | 175.75 |
| 1994 | 181.04 |
| 1995 | 194.64 |
| 1996 | 198.76 |
| 1997 | 203.15 |
| 1998 | 207.23 |
| 1999 | 211.34 |
| 2000 | 217.01 |
| 2001 | 222.32 |
| 2002 | 228.38 |
| 2003 | 234.35 |
| 2004 | 239.18 |
| 2005 | 245.59 |
| 2006 | 250.84 |
| 2007 | 254.17 |
| 2008 | 256.29 |
| 2009 | 257.44 |
| 2010 | 257.89 |
| 2011 | 259.57 |
| 2012 | 259.39 |
| 2013 | 259.94 |
| 2014 | 261.75 |
| 2015 | 297.32 |