| 年度 | 实际值 |
|---|---|
| 1992 | 621 |
| 1993 | 626 |
| 1994 | 628 |
| 1995 | 637 |
| 1996 | 641 |
| 1997 | 645 |
| 1998 | 648 |
| 1999 | 652 |
| 2000 | 659 |
| 2001 | 664 |
| 2002 | 668 |
| 2003 | 674.77 |
| 2004 | 677 |
| 2005 | 683.99 |
| 2006 | 690.47 |
| 2007 | 694.78 |
| 2008 | 695.78 |
| 2009 | |
| 2010 | 691.89 |
| 2011 | 643.55 |
| 2012 | 640.33 |
| 2013 | 642.18 |
| 2014 | 638.08 |
| 2015 | 638.9 |