| 年度 | 实际值 |
|---|---|
| 1992 | 3518 |
| 1993 | 4023 |
| 1994 | 4474 |
| 1995 | 861 |
| 1996 | 1103 |
| 1997 | 2542 |
| 1998 | 3132 |
| 1999 | 5052 |
| 2000 | |
| 2001 | |
| 2002 | |
| 2003 | 23103 |
| 2004 | 26809 |
| 2005 | 31836 |
| 2006 | 37696 |
| 2007 | 56230 |
| 2008 | 65786 |
| 2009 | |
| 2010 | 97707 |
| 2011 | 148006 |
| 2012 | 181722 |
| 2013 | 197303 |
| 2014 | 175882 |
| 2015 | 249324 |
| 2016 | 262742 |
| 2017 | 278696 |
| 2018 | 300890 |