| 年度 | 实际值 |
|---|---|
| 1992 | 57870 |
| 1993 | |
| 1994 | |
| 1995 | 48600 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 53236 |
| 2000 | 46290 |
| 2001 | 34530 |
| 2002 | 27650 |
| 2003 | 23910 |
| 2004 | 30140 |
| 2005 | 31170 |
| 2006 | 30370 |
| 2007 | 30360 |
| 2008 | 32510 |
| 2009 | 33070 |
| 2010 | 33160 |
| 2011 | 32280 |
| 2012 | 32160 |
| 2013 | 31320 |
| 2014 | 19530 |
| 2015 | 19020 |
| 2016 | 19810 |