| 年度 | 实际值 |
|---|---|
| 1992 | 125 |
| 1993 | 133 |
| 1994 | 135 |
| 1995 | 144 |
| 1996 | 149 |
| 1997 | 227 |
| 1998 | 232 |
| 1999 | 239 |
| 2000 | 236 |
| 2001 | 241 |
| 2002 | 245 |
| 2003 | 237.17 |
| 2004 | 240.76 |
| 2005 | 245.78 |
| 2006 | 247.15 |
| 2007 | 271.95 |
| 2008 | 275.2 |
| 2009 | |
| 2010 | 302.17 |
| 2011 | 308.67 |
| 2012 | 312.66 |
| 2013 | 315.34 |
| 2014 | 315.96 |
| 2015 | 263.63 |