| 年度 | 实际值 |
|---|---|
| 1992 | 496 |
| 1993 | 499 |
| 1994 | 500 |
| 1995 | 504 |
| 1996 | 508 |
| 1997 | 511 |
| 1998 | 512 |
| 1999 | 515 |
| 2000 | 519 |
| 2001 | 520 |
| 2002 | 522 |
| 2003 | 524.26 |
| 2004 | 527.07 |
| 2005 | 530.37 |
| 2006 | 533.79 |
| 2007 | 537.9 |
| 2008 | 541.43 |
| 2009 | |
| 2010 | 545.58 |
| 2011 | 547.11 |
| 2012 | 550.6 |
| 2013 | 537.57 |
| 2014 | 559.06 |
| 2015 | 560.42 |