| 年度 | 实际值 |
|---|---|
| 1993 | 7718 |
| 1994 | 7904 |
| 1995 | 8125 |
| 1996 | 8373 |
| 1997 | 8390 |
| 1998 | 8269 |
| 1999 | 4921 |
| 2000 | 8285 |
| 2001 | 8357 |
| 2002 | 6853 |
| 2003 | 9430 |
| 2004 | 10049 |
| 2005 | 10457 |
| 2006 | 11144 |
| 2007 | 11879 |
| 2008 | 12413 |
| 2009 | |
| 2010 | 14282 |
| 2011 | 15289 |
| 2012 | 16253 |
| 2013 | 17772 |
| 2014 | 21174 |
| 2015 | 20169 |
| 2016 | 21910 |
| 2017 | 23412 |
| 2018 | 24582 |