| 年度 | 实际值 |
|---|---|
| 1993 | 1527 |
| 1994 | 1652 |
| 1995 | 1688 |
| 1996 | 1676 |
| 1997 | 1998 |
| 1998 | 1188 |
| 1999 | 1677 |
| 2000 | 1696 |
| 2001 | 1567 |
| 2002 | 1152 |
| 2003 | 1771 |
| 2004 | 1578 |
| 2005 | 1255 |
| 2006 | 1166 |
| 2007 | 1917 |
| 2008 | 1133 |
| 2009 | |
| 2010 | 1730 |
| 2011 | 1941 |
| 2012 | 1941 |
| 2013 | 2250 |
| 2014 | 2155 |
| 2015 | 2996 |
| 2016 | 3025 |
| 2017 | 3131 |
| 2018 | 3115 |