| 年度 | 实际值 |
|---|---|
| 1993 | 1578 |
| 1994 | 1393 |
| 1995 | 1680 |
| 1996 | 1679 |
| 1997 | 1734 |
| 1998 | 1574 |
| 1999 | 1552 |
| 2000 | 1547 |
| 2001 | 1359 |
| 2002 | 1252 |
| 2003 | 1519 |
| 2004 | 1467 |
| 2005 | 1652 |
| 2006 | 1561 |
| 2007 | 1803 |
| 2008 | 1724 |
| 2009 | |
| 2010 | 1843 |
| 2011 | 1741 |
| 2012 | 1778 |
| 2013 | 964 |
| 2014 | 1773 |
| 2015 | 1788 |
| 2016 | 1768 |
| 2017 | 1949 |
| 2018 | 1988 |