| 年度 | 实际值 |
|---|---|
| 1993 | 1376 |
| 1994 | 959 |
| 1995 | 987 |
| 1996 | 1623 |
| 1997 | 1276 |
| 1998 | 988 |
| 1999 | 1131 |
| 2000 | 1340 |
| 2001 | 1088 |
| 2002 | 945 |
| 2003 | 992 |
| 2004 | 804 |
| 2005 | 2111 |
| 2006 | 1166 |
| 2007 | 1286 |
| 2008 | 1800 |
| 2009 | |
| 2010 | 1831 |
| 2011 | 1886 |
| 2012 | 2018 |
| 2013 | 2882 |
| 2014 | 4631 |
| 2015 | 5346 |
| 2016 | 4981 |
| 2017 | 5432 |
| 2018 | 6245 |