| 年度 | 实际值 |
|---|---|
| 1992 | 632 |
| 1993 | 645 |
| 1994 | 649 |
| 1995 | 664 |
| 1996 | 669 |
| 1997 | 674 |
| 1998 | 686 |
| 1999 | 691 |
| 2000 | 680 |
| 2001 | 687 |
| 2002 | 689 |
| 2003 | 693.68 |
| 2004 | 700.27 |
| 2005 | 693.62 |
| 2006 | 707.71 |
| 2007 | 711.5 |
| 2008 | 710.24 |
| 2009 | |
| 2010 | 680.43 |
| 2011 | 686.51 |
| 2012 | 686.07 |
| 2013 | 687.91 |
| 2014 | 691.22 |
| 2015 | 690.09 |