| 年度 | 实际值 |
|---|---|
| 1992 | 3685 |
| 1993 | 4356 |
| 1994 | 1790 |
| 1995 | 2006 |
| 1996 | 2625 |
| 1997 | 3036 |
| 1998 | 3616 |
| 1999 | 2918 |
| 2000 | |
| 2001 | |
| 2002 | |
| 2003 | 27912 |
| 2004 | 30097 |
| 2005 | 36308 |
| 2006 | 52702 |
| 2007 | 86125 |
| 2008 | 110790 |
| 2009 | |
| 2010 | 153671 |
| 2011 | 169359 |
| 2012 | 232863 |
| 2013 | 220173 |
| 2014 | 221287 |
| 2015 | 260036 |
| 2016 | 291248 |
| 2017 | 295842 |
| 2018 | 313578 |