| 年度 | 实际值 |
|---|---|
| 1992 | 323 |
| 1993 | 326 |
| 1994 | 328 |
| 1995 | 334 |
| 1996 | 336 |
| 1997 | 340 |
| 1998 | 343 |
| 1999 | 346 |
| 2000 | 348 |
| 2001 | 349 |
| 2002 | 350 |
| 2003 | 354.34 |
| 2004 | 350.86 |
| 2005 | 352.5 |
| 2006 | 357.06 |
| 2007 | 359.87 |
| 2008 | 365.55 |
| 2009 | |
| 2010 | 374.91 |
| 2011 | 377.26 |
| 2012 | 379.78 |
| 2013 | 376.89 |
| 2014 | 379.11 |
| 2015 | 379.59 |