| 年度 | 实际值 |
|---|---|
| 1993 | 2281 |
| 1994 | 3087 |
| 1995 | 2725 |
| 1996 | 3231 |
| 1997 | 3332 |
| 1998 | 3858 |
| 1999 | 3883 |
| 2000 | 3946 |
| 2001 | 3976 |
| 2002 | 4263 |
| 2003 | 4464 |
| 2004 | 2372 |
| 2005 | 2389 |
| 2006 | 5091 |
| 2007 | 5524 |
| 2008 | 5374 |
| 2009 | |
| 2010 | 3527 |
| 2011 | 3443 |
| 2012 | 3443 |
| 2013 | 3478 |
| 2014 | 3343 |
| 2015 | 3513 |
| 2016 | 2827 |
| 2017 | 2884 |
| 2018 | 3129 |