| 年度 | 实际值 |
|---|---|
| 1993 | 1760 |
| 1994 | 1676 |
| 1995 | 1770 |
| 1996 | 1938 |
| 1997 | 1218 |
| 1998 | 1472 |
| 1999 | 1549 |
| 2000 | 1638 |
| 2001 | 1580 |
| 2002 | 1568 |
| 2003 | 1690 |
| 2004 | 1816 |
| 2005 | 1834 |
| 2006 | 1890 |
| 2007 | 2211 |
| 2008 | 6451 |
| 2009 | |
| 2010 | 7116 |
| 2011 | 3281 |
| 2012 | 3516 |
| 2013 | 3774 |
| 2014 | 3987 |
| 2015 | 4160 |
| 2016 | 4869 |
| 2017 | 5036 |
| 2018 | 5650 |