| 年度 | 实际值 |
|---|---|
| 1993 | 7952 |
| 1994 | 8253 |
| 1995 | 8240 |
| 1996 | 8281 |
| 1997 | 8276 |
| 1998 | 7534 |
| 1999 | 8488 |
| 2000 | 7862 |
| 2001 | 8313 |
| 2002 | 6640 |
| 2003 | 7178 |
| 2004 | 7215 |
| 2005 | 7833 |
| 2006 | 8372 |
| 2007 | 8539 |
| 2008 | 9649 |
| 2009 | |
| 2010 | 10815 |
| 2011 | 14021 |
| 2012 | 15303 |
| 2013 | 16353 |
| 2014 | 17163 |
| 2015 | 17730 |
| 2016 | 19285 |
| 2017 | 20964 |
| 2018 | 22320 |