| 年度 | 实际值 |
|---|---|
| 1993 | 1921 |
| 1994 | 1866 |
| 1995 | 1865 |
| 1996 | 1678 |
| 1997 | 6549 |
| 1998 | 4225 |
| 1999 | 4389 |
| 2000 | 7103 |
| 2001 | 5310 |
| 2002 | 4220 |
| 2003 | 4813 |
| 2004 | 3844 |
| 2005 | 4000 |
| 2006 | 5906 |
| 2007 | 5798 |
| 2008 | 6253 |
| 2009 | |
| 2010 | 6171 |
| 2011 | 4925 |
| 2012 | 5203 |
| 2013 | 5565 |
| 2014 | 8284 |
| 2015 | 8034 |
| 2016 | 8651 |
| 2017 | 9022 |
| 2018 | 9684 |