| 年度 | 实际值 |
|---|---|
| 1993 | 1390 |
| 1994 | 1616 |
| 1995 | 1427 |
| 1996 | 1008 |
| 1997 | 935 |
| 1998 | 1083 |
| 1999 | 969 |
| 2000 | 1024 |
| 2001 | 1081 |
| 2002 | 1020 |
| 2003 | 1081 |
| 2004 | 1492 |
| 2005 | 1441 |
| 2006 | 1546 |
| 2007 | 1200 |
| 2008 | 1172 |
| 2009 | |
| 2010 | 1451 |
| 2011 | 2080 |
| 2012 | 1873 |
| 2013 | 2489 |
| 2014 | 3588 |
| 2015 | 3961 |
| 2016 | 4121 |
| 2017 | 4454 |
| 2018 | 5062 |