| 年度 | 实际值 |
|---|---|
| 1994 | 26684 |
| 1995 | 27561 |
| 1996 | |
| 1997 | 31280 |
| 1998 | 32836 |
| 1999 | 33845 |
| 2000 | 34091 |
| 2001 | 33712 |
| 2002 | 34091 |
| 2003 | 33462 |
| 2004 | 32816 |
| 2005 | 32123 |
| 2006 | 31489 |
| 2007 | 30948 |
| 2008 | 30393 |
| 2009 | 29511 |
| 2010 | 29248 |
| 2011 | 29524 |
| 2012 | 30027 |
| 2013 | 30618 |
| 2014 | 31839 |
| 2015 | 33109 |
| 2016 | 33737 |