| 年度 | 实际值 |
|---|---|
| 1992 | 25651 |
| 1993 | |
| 1994 | |
| 1995 | 8555 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 7782 |
| 2000 | 17601 |
| 2001 | 4881 |
| 2002 | 39200 |
| 2003 | 30123 |
| 2004 | 37776 |
| 2005 | 31094 |
| 2006 | 30633 |
| 2007 | 19605 |
| 2008 | 28501 |
| 2009 | 20006 |
| 2010 | 29041 |
| 2011 | 30298.5 |
| 2012 | 32417.52 |
| 2013 | 35207 |
| 2014 | 33859 |
| 2015 | 33769 |
| 2016 | 35544 |