| 年度 | 实际值 |
|---|---|
| 1992 | 38219 |
| 1993 | |
| 1994 | |
| 1995 | 42520 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 43561 |
| 2000 | 44730 |
| 2001 | 41663 |
| 2002 | 39395 |
| 2003 | 37469 |
| 2004 | 37774 |
| 2005 | 38689 |
| 2006 | 37452 |
| 2007 | 35372 |
| 2008 | 30232 |
| 2009 | 31913 |
| 2010 | 31536 |
| 2011 | 31725 |
| 2012 | 31902 |
| 2013 | 32392 |
| 2014 | 32920 |
| 2015 | 32550 |
| 2016 | 32890 |