| 年度 | 实际值 |
|---|---|
| 1992 | 9594 |
| 1993 | 11173 |
| 1994 | 5708 |
| 1995 | 4020 |
| 1996 | 4992 |
| 1997 | 4872 |
| 1998 | 6302 |
| 1999 | 6637 |
| 2000 | 21391 |
| 2001 | 26481 |
| 2002 | 32701 |
| 2003 | 34874 |
| 2004 | 39461 |
| 2005 | 42319 |
| 2006 | 59238 |
| 2007 | 90985 |
| 2008 | 120070 |
| 2009 | 159430 |
| 2010 | 159766 |
| 2011 | 195035 |
| 2012 | 313500 |
| 2013 | 290927 |
| 2014 | 292461 |
| 2015 | 348004 |
| 2016 | 361711 |
| 2017 | 348455 |
| 2018 | 304060 |