| 年度 | 实际值 |
|---|---|
| 1993 | 2019 |
| 1994 | 2064 |
| 1995 | 2062 |
| 1996 | 1982 |
| 1997 | 1834 |
| 1998 | 2073 |
| 1999 | 2013 |
| 2000 | 2184 |
| 2001 | 2070 |
| 2002 | 1863 |
| 2003 | 1473 |
| 2004 | 1568 |
| 2005 | 2103 |
| 2006 | 2365 |
| 2007 | 2368 |
| 2008 | 4218 |
| 2009 | |
| 2010 | 2652 |
| 2011 | 2888 |
| 2012 | 3217 |
| 2013 | 3105 |
| 2014 | 3288 |
| 2015 | 3546 |
| 2016 | 3474 |
| 2017 | 3845 |
| 2018 | 3923 |