| 年度 | 实际值 |
|---|---|
| 1992 | 896 |
| 1993 | 2251 |
| 1994 | 7220 |
| 1995 | 8012 |
| 1996 | 9193 |
| 1997 | 4565 |
| 1998 | 10371 |
| 1999 | 5690 |
| 2000 | 7382 |
| 2001 | 6986 |
| 2002 | 7087 |
| 2003 | 10920 |
| 2004 | 12779 |
| 2005 | 15335 |
| 2006 | 16772.48 |
| 2007 | 16923.3 |
| 2008 | 16676.4 |
| 2009 | |
| 2010 | 17355.06 |
| 2011 | 11780 |
| 2012 | 13166 |
| 2013 | 13385 |
| 2014 | 9465 |