| 年度 | 实际值 |
|---|---|
| 1992 | 1890 |
| 1993 | 1909 |
| 1994 | 1922 |
| 1995 | 1969 |
| 1996 | 627 |
| 1997 | 631 |
| 1998 | 652 |
| 1999 | 637 |
| 2000 | 642 |
| 2001 | 645 |
| 2002 | 643 |
| 2003 | 647.38 |
| 2004 | 648.58 |
| 2005 | 662.85 |
| 2006 | 667.31 |
| 2007 | 674.95 |
| 2008 | 678.47 |
| 2009 | |
| 2010 | 682.28 |
| 2011 | 690.43 |
| 2012 | 696.95 |
| 2013 | 700.98 |
| 2014 | 702.95 |
| 2015 | 703.23 |