| 年度 | 实际值 |
|---|---|
| 1992 | 500 |
| 1993 | 513 |
| 1994 | 515 |
| 1995 | 518 |
| 1996 | 519 |
| 1997 | 523 |
| 1998 | 527 |
| 1999 | 530 |
| 2000 | 533 |
| 2001 | 533 |
| 2002 | 534 |
| 2003 | 534.53 |
| 2004 | 536.38 |
| 2005 | 532.46 |
| 2006 | 534.39 |
| 2007 | 536.79 |
| 2008 | 538.88 |
| 2009 | |
| 2010 | 541.38 |
| 2011 | 543.65 |
| 2012 | 544.43 |
| 2013 | 546.91 |
| 2014 | 550.28 |
| 2015 | 553.8 |