| 年度 | 实际值 |
|---|---|
| 1993 | 2400 |
| 1994 | 2467 |
| 1995 | 2506 |
| 1996 | 2217 |
| 1997 | |
| 1998 | |
| 1999 | 2399 |
| 2000 | 2570 |
| 2001 | 2500 |
| 2002 | 2530 |
| 2003 | 2388 |
| 2004 | 916 |
| 2005 | 1384 |
| 2006 | 2840 |
| 2007 | 3565 |
| 2008 | 3670 |
| 2009 | |
| 2010 | 2574 |
| 2011 | 2754 |
| 2012 | 2763 |
| 2013 | 2625 |
| 2014 | 2134 |
| 2015 | 2200 |
| 2016 | 2343 |
| 2017 | 3129 |
| 2018 | 3273 |