| 年度 | 实际值 |
|---|---|
| 1992 | 1363 |
| 1993 | 1451 |
| 1994 | 1972 |
| 1995 | 2327 |
| 1996 | 1870 |
| 1997 | |
| 1998 | 2280 |
| 1999 | 2669 |
| 2000 | |
| 2001 | |
| 2002 | |
| 2003 | 31963 |
| 2004 | 27767 |
| 2005 | 31787 |
| 2006 | 50293 |
| 2007 | 77445 |
| 2008 | 88743 |
| 2009 | |
| 2010 | 141631 |
| 2011 | 151879 |
| 2012 | 178010 |
| 2013 | 191330 |
| 2014 | 195428 |
| 2015 | 240148 |
| 2016 | 258210 |
| 2017 | 309621 |
| 2018 | 311272 |