| 年度 | 实际值 |
|---|---|
| 1992 | 1444 |
| 1993 | 1351 |
| 1994 | 1263 |
| 1995 | 1222 |
| 1996 | 1210 |
| 1997 | 1566 |
| 1998 | 6357 |
| 1999 | 11538 |
| 2000 | 12530 |
| 2001 | 13642 |
| 2002 | 13871 |
| 2003 | 15725 |
| 2004 | 16930 |
| 2005 | 18637 |
| 2006 | 22338.68 |
| 2007 | 21395.8 |
| 2008 | 29164.8 |
| 2009 | |
| 2010 | 39892.63 |
| 2011 | 40857 |
| 2012 | 42540 |
| 2013 | 42661 |
| 2014 | 1477 |