| 年度 | 实际值 |
|---|---|
| 1993 | 2004 |
| 1994 | 1947 |
| 1995 | 2145 |
| 1996 | 1923 |
| 1997 | 1991 |
| 1998 | 2077 |
| 1999 | 2072 |
| 2000 | 1984 |
| 2001 | 1749 |
| 2002 | 1818 |
| 2003 | 2471 |
| 2004 | 1938 |
| 2005 | 1801 |
| 2006 | 2132 |
| 2007 | 2226 |
| 2008 | 1716 |
| 2009 | |
| 2010 | 2743 |
| 2011 | 3540 |
| 2012 | 2442 |
| 2013 | 3104 |
| 2014 | 3125 |
| 2015 | 2913 |
| 2016 | 3590 |
| 2017 | 3724 |
| 2018 | 3682 |