| 年度 | 实际值 |
|---|---|
| 1993 | 890 |
| 1994 | 1264 |
| 1995 | 1240 |
| 1996 | 1281 |
| 1997 | 1175 |
| 1998 | 1454 |
| 1999 | 1530 |
| 2000 | 1530 |
| 2001 | 1565 |
| 2002 | 1151 |
| 2003 | 2276 |
| 2004 | 2630 |
| 2005 | 2855 |
| 2006 | 3158 |
| 2007 | 3638 |
| 2008 | 3172 |
| 2009 | |
| 2010 | 3730 |
| 2011 | 4685 |
| 2012 | 5757 |
| 2013 | 6224 |
| 2014 | 6422 |
| 2015 | 6760 |
| 2016 | 7432 |
| 2017 | 8239 |
| 2018 | 8821 |