| 年度 | 实际值 |
|---|---|
| 1992 | 17204 |
| 1993 | 18217 |
| 1994 | 23327 |
| 1995 | 23567 |
| 1996 | 23659 |
| 1997 | 24464 |
| 1998 | 21496 |
| 1999 | 26317 |
| 2000 | 26013 |
| 2001 | 28151 |
| 2002 | 30530 |
| 2003 | 34679 |
| 2004 | 37283 |
| 2005 | 39485 |
| 2006 | 42014 |
| 2007 | 50461.9 |
| 2008 | 54260 |
| 2009 | |
| 2010 | 40368.3 |
| 2011 | 43428 |
| 2012 | 46475 |
| 2013 | 50322 |
| 2014 | 49751 |