| 年度 | 实际值 |
|---|---|
| 1995 | 1876 |
| 1996 | 1810 |
| 1997 | 974 |
| 1998 | 5000 |
| 1999 | 3920 |
| 2000 | 12432 |
| 2001 | 14072 |
| 2002 | 14891 |
| 2003 | 25876 |
| 2004 | 48148 |
| 2005 | 39739 |
| 2006 | 59824 |
| 2007 | 88677 |
| 2008 | 114019 |
| 2009 | |
| 2010 | 115699 |
| 2011 | 145313 |
| 2012 | 134251 |
| 2013 | 407218 |
| 2014 | 579983 |
| 2015 | 553108 |
| 2016 | 198829 |
| 2017 | 108074 |
| 2018 | 137396 |