| 年度 | 实际值 |
|---|---|
| 1993 | 29000 |
| 1994 | 28600 |
| 1995 | 29600 |
| 1996 | 30000 |
| 1997 | 31000 |
| 1998 | 212800 |
| 1999 | 210000 |
| 2000 | 216283 |
| 2001 | 208564 |
| 2002 | 197204 |
| 2003 | 212236 |
| 2004 | 145289 |
| 2005 | 147607 |
| 2006 | 148669 |
| 2007 | 151291 |
| 2008 | 147540 |
| 2009 | 142467 |
| 2010 | 142968 |
| 2011 | 141842 |
| 2012 | 140650 |
| 2013 | 138255 |
| 2014 | 136736 |
| 2015 | 136439 |