| 年度 | 实际值 |
|---|---|
| 1993 | 1914 |
| 1994 | 2037 |
| 1995 | 2151 |
| 1996 | 3024 |
| 1997 | 3028 |
| 1998 | 3028 |
| 1999 | 3069 |
| 2000 | |
| 2001 | |
| 2002 | |
| 2003 | 4479 |
| 2004 | 5190 |
| 2005 | 5973 |
| 2006 | 6526 |
| 2007 | 7728 |
| 2008 | 9160 |
| 2009 | |
| 2010 | 10537 |
| 2011 | 12398 |
| 2012 | 13125 |
| 2013 | 15830 |
| 2014 | 16201 |
| 2015 | 17264 |
| 2016 | 18185 |
| 2017 | 18792 |
| 2018 | 19399 |