| 年度 | 实际值 |
|---|---|
| 1993 | 4702 |
| 1994 | 4856 |
| 1995 | 4576 |
| 1996 | 4419 |
| 1997 | 3968 |
| 1998 | 4087 |
| 1999 | 5868 |
| 2000 | 5406 |
| 2001 | 5647 |
| 2002 | 5194 |
| 2003 | 4784 |
| 2004 | 4960 |
| 2005 | 5822 |
| 2006 | 5092 |
| 2007 | 6851 |
| 2008 | 7553 |
| 2009 | |
| 2010 | 9199 |
| 2011 | 10243 |
| 2012 | 11225 |
| 2013 | 12041 |
| 2014 | 13210 |
| 2015 | 14010 |
| 2016 | 14935 |
| 2017 | 15903 |
| 2018 | 17114 |