| 年度 | 实际值 |
|---|---|
| 1992 | 319 |
| 1993 | 325 |
| 1994 | 199 |
| 1995 | 207 |
| 1996 | 212 |
| 1997 | 206 |
| 1998 | 219 |
| 1999 | 223 |
| 2000 | 227 |
| 2001 | 229 |
| 2002 | 241 |
| 2003 | 239.22 |
| 2004 | 243.53 |
| 2005 | 247.21 |
| 2006 | 249.33 |
| 2007 | 251.24 |
| 2008 | 252.4 |
| 2009 | |
| 2010 | 1870.88 |
| 2011 | 254.4 |
| 2012 | 253.64 |
| 2013 | 244.38 |
| 2014 | 247.2 |
| 2015 | 249.64 |