| 年度 | 实际值 |
|---|---|
| 1993 | 5751 |
| 1994 | 5944 |
| 1995 | 6408 |
| 1996 | 4830 |
| 1997 | 4399 |
| 1998 | 4076 |
| 1999 | 4408 |
| 2000 | 4328 |
| 2001 | 4362 |
| 2002 | 5074 |
| 2003 | 4823 |
| 2004 | 3800 |
| 2005 | 4769 |
| 2006 | 4767 |
| 2007 | 4774 |
| 2008 | 6260 |
| 2009 | |
| 2010 | 7061 |
| 2011 | 7412 |
| 2012 | 7972 |
| 2013 | 8730 |
| 2014 | 8965 |
| 2015 | 6328 |
| 2016 | 9399 |
| 2017 | 10027 |
| 2018 | 10493 |