| 年度 | 实际值 |
|---|---|
| 1992 | 5522 |
| 1993 | |
| 1994 | |
| 1995 | 11531 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 18249 |
| 2000 | 15360 |
| 2001 | 17902 |
| 2002 | 14246 |
| 2003 | 18342 |
| 2004 | 18630 |
| 2005 | 18049 |
| 2006 | 18803 |
| 2007 | 29894 |
| 2008 | 38562 |
| 2009 | 86787 |
| 2010 | 104502 |
| 2011 | 112065 |
| 2012 | 124212 |
| 2013 | 155984 |
| 2014 | 169675 |
| 2015 | 190879 |
| 2016 | 217488 |
| 2017 | 226867 |