| 年度 | 实际值 |
|---|---|
| 1993 | 2906 |
| 1994 | 2667 |
| 1995 | 2728 |
| 1996 | 2774 |
| 1997 | 2246 |
| 1998 | 2315 |
| 1999 | 2431 |
| 2000 | 2571 |
| 2001 | 2578 |
| 2002 | 2849 |
| 2003 | 2022 |
| 2004 | 1860 |
| 2005 | 2016 |
| 2006 | 2046 |
| 2007 | 3493 |
| 2008 | 3696 |
| 2009 | |
| 2010 | 3146 |
| 2011 | 3642 |
| 2012 | 3634 |
| 2013 | 3916 |
| 2014 | 4639 |
| 2015 | 6360 |
| 2016 | 3967 |
| 2017 | 6565 |
| 2018 | 6791 |