| 年度 | 实际值 |
|---|---|
| 1992 | 4803 |
| 1993 | |
| 1994 | |
| 1995 | 4834 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 9859 |
| 2000 | 10473 |
| 2001 | 14774 |
| 2002 | 29008 |
| 2003 | 22366 |
| 2004 | 20867 |
| 2005 | 18108 |
| 2006 | 19596 |
| 2007 | 19693 |
| 2008 | 13989 |
| 2009 | 7000 |
| 2010 | 28122 |
| 2011 | 30874 |
| 2012 | 31677 |
| 2013 | 79399 |
| 2014 | 95981 |
| 2015 | 172809 |
| 2016 | 177875 |
| 2017 | 173726 |