| 年度 | 实际值 |
|---|---|
| 1993 | 3076 |
| 1994 | 3211 |
| 1995 | 3199 |
| 1996 | 3300 |
| 1997 | 3329 |
| 1998 | 3135 |
| 1999 | 3705 |
| 2000 | 3341 |
| 2001 | 3400 |
| 2002 | 2869 |
| 2003 | 2481 |
| 2004 | 2641 |
| 2005 | 3418 |
| 2006 | 3387 |
| 2007 | 3320 |
| 2008 | 3449 |
| 2009 | |
| 2010 | 3280 |
| 2011 | 3217 |
| 2012 | 3459 |
| 2013 | 4713 |
| 2014 | 5150 |
| 2015 | 5218 |
| 2016 | 5428 |
| 2017 | 5297 |
| 2018 | 5715 |