| 年度 | 实际值 |
|---|---|
| 1992 | 1215 |
| 1993 | |
| 1994 | |
| 1995 | 19186 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 28086 |
| 2000 | 25891 |
| 2001 | 24378 |
| 2002 | 24405 |
| 2003 | 25155 |
| 2004 | 28380 |
| 2005 | 17052 |
| 2006 | 13684 |
| 2007 | 12800 |
| 2008 | 17352 |
| 2009 | 21349 |
| 2010 | 60429 |
| 2011 | 71142 |
| 2012 | 93052 |
| 2013 | 135177 |
| 2014 | 185327 |
| 2015 | 189950 |
| 2016 | 221545 |
| 2017 | 271256 |