| 年度 | 实际值 |
|---|---|
| 1993 | 2567 |
| 1994 | 7996 |
| 1995 | 7949 |
| 1996 | 8431 |
| 1997 | 8571 |
| 1998 | 8718 |
| 1999 | 9087 |
| 2000 | 9510 |
| 2001 | 9525 |
| 2002 | 9009 |
| 2003 | 7111 |
| 2004 | 8726 |
| 2005 | 8987 |
| 2006 | 9487 |
| 2007 | 9793 |
| 2008 | 10233 |
| 2009 | |
| 2010 | 19585 |
| 2011 | 21521 |
| 2012 | 17217 |
| 2013 | 14603 |
| 2014 | 15629 |
| 2015 | 16186 |
| 2016 | 15756 |
| 2017 | 17993 |
| 2018 | 18907 |