| 年度 | 实际值 |
|---|---|
| 1993 | 16272 |
| 1994 | 16391 |
| 1995 | 16384 |
| 1996 | 15866 |
| 1997 | 16047 |
| 1998 | 15745 |
| 1999 | 16078 |
| 2000 | 10973 |
| 2001 | 10769 |
| 2002 | 10087 |
| 2003 | 13599 |
| 2004 | 13931 |
| 2005 | 14292 |
| 2006 | 15169 |
| 2007 | 15705 |
| 2008 | 16060 |
| 2009 | 16593 |
| 2010 | 17007 |
| 2011 | 17265 |
| 2012 | 19101 |
| 2013 | 20662 |
| 2014 | 21602 |
| 2015 | 22307 |
| 2016 | 25272 |
| 2017 | 28100 |
| 2018 | 31560 |