| 年度 | 实际值 |
|---|---|
| 1993 | 7218 |
| 1994 | 7302 |
| 1995 | 7179 |
| 1996 | 7098 |
| 1997 | 7533 |
| 1998 | 7753 |
| 1999 | 7573 |
| 2000 | 7003 |
| 2001 | 6785 |
| 2002 | 5586 |
| 2003 | 4756 |
| 2004 | 5674 |
| 2005 | 7845 |
| 2006 | 5019 |
| 2007 | 4789 |
| 2008 | 5115 |
| 2009 | |
| 2010 | 4861 |
| 2011 | 7667 |
| 2012 | 6097 |
| 2013 | 8567 |
| 2014 | 9416 |
| 2015 | 9699 |
| 2016 | 10970 |
| 2017 | 11964 |
| 2018 | 12502 |