| 年度 | 实际值 |
|---|---|
| 1993 | 2365 |
| 1994 | 2437 |
| 1995 | 2476 |
| 1996 | 2503 |
| 1997 | 2490 |
| 1998 | 1368 |
| 1999 | 1369 |
| 2000 | 1389 |
| 2001 | 1801 |
| 2002 | 1497 |
| 2003 | 1546 |
| 2004 | 2151 |
| 2005 | 2506 |
| 2006 | 2831 |
| 2007 | 3069 |
| 2008 | 3108 |
| 2009 | |
| 2010 | 3173 |
| 2011 | 5154 |
| 2012 | 5486 |
| 2013 | 5808 |
| 2014 | 5846 |
| 2015 | 6062 |
| 2016 | 6373 |
| 2017 | 6825 |
| 2018 | 6869 |