| 年度 | 实际值 |
|---|---|
| 1993 | 839 |
| 1994 | 881 |
| 1995 | 1060 |
| 1996 | 1514 |
| 1997 | 1568 |
| 1998 | 1783 |
| 1999 | 1794 |
| 2000 | 1836 |
| 2001 | 1854 |
| 2002 | 2018 |
| 2003 | 2130 |
| 2004 | 1139 |
| 2005 | 1168 |
| 2006 | 2261 |
| 2007 | 2172 |
| 2008 | 2503 |
| 2009 | |
| 2010 | 1862 |
| 2011 | 1906 |
| 2012 | 1406 |
| 2013 | 1424 |
| 2014 | 1620 |
| 2015 | 1649 |
| 2016 | 1702 |
| 2017 | 1611 |
| 2018 | 1781 |