| 年度 | 实际值 |
|---|---|
| 1993 | 1985 |
| 1994 | 2138 |
| 1995 | 1661 |
| 1996 | 2320 |
| 1997 | 2506 |
| 1998 | 1456 |
| 1999 | 2893 |
| 2000 | 3122 |
| 2001 | 3208 |
| 2002 | 3248 |
| 2003 | 2232 |
| 2004 | 2754 |
| 2005 | 2716 |
| 2006 | 2846 |
| 2007 | 3126 |
| 2008 | 3296 |
| 2009 | |
| 2010 | 3937 |
| 2011 | 4124 |
| 2012 | 4251 |
| 2013 | 4527 |
| 2014 | 4492 |
| 2015 | 5258 |
| 2016 | 11916 |
| 2017 | 5742 |
| 2018 | 5992 |