| 年度 | 实际值 |
|---|---|
| 1993 | 13895 |
| 1994 | 14344 |
| 1995 | 14068 |
| 1996 | 14106 |
| 1997 | 13362 |
| 1998 | 13712 |
| 1999 | 13146 |
| 2000 | 13712 |
| 2001 | 12839 |
| 2002 | 13021 |
| 2003 | 14039 |
| 2004 | 14350 |
| 2005 | 14725 |
| 2006 | 15431 |
| 2007 | 16002 |
| 2008 | 16389 |
| 2009 | |
| 2010 | 14982 |
| 2011 | 16003 |
| 2012 | 17576 |
| 2013 | 20471 |
| 2014 | 28912 |
| 2015 | 24449 |
| 2016 | 27251 |
| 2017 | 38049 |
| 2018 | 42051 |