| 年度 | 实际值 |
|---|---|
| 1997 | 3315 |
| 1998 | 8101 |
| 1999 | 11394 |
| 2000 | 11302 |
| 2001 | 11302 |
| 2002 | 11731 |
| 2003 | 9515 |
| 2004 | 12246 |
| 2005 | 12597 |
| 2006 | 12788 |
| 2007 | 12633 |
| 2008 | 12765 |
| 2009 | |
| 2010 | 12598 |
| 2011 | 16566 |
| 2012 | 12067 |
| 2013 | 12169 |
| 2014 | 12112 |
| 2015 | 11829 |
| 2016 | 11913 |
| 2017 | 12450 |
| 2018 | 12591 |
| 2019 | 14600 |