| 年度 | 实际值 |
|---|---|
| 1993 | 4341 |
| 1994 | 4357 |
| 1995 | 11063 |
| 1996 | 9700 |
| 1997 | 10137 |
| 1998 | 10814 |
| 1999 | 11372 |
| 2000 | 11693 |
| 2001 | 11843 |
| 2002 | 10810 |
| 2003 | 8718 |
| 2004 | 10261 |
| 2005 | 10247 |
| 2006 | 10943 |
| 2007 | 14373 |
| 2008 | 14370 |
| 2009 | |
| 2010 | 16061 |
| 2011 | 16510 |
| 2012 | 19683 |
| 2013 | 20429 |
| 2014 | 21287 |
| 2015 | 24250 |
| 2016 | 25391 |
| 2017 | 28300 |
| 2018 | 30808 |