| 年度 | 实际值 |
|---|---|
| 1995 | 350 |
| 1996 | 50 |
| 1997 | |
| 1998 | |
| 1999 | 782 |
| 2000 | 1030 |
| 2001 | 2733 |
| 2002 | 5102 |
| 2003 | 8334 |
| 2004 | 8880 |
| 2005 | 24346 |
| 2006 | 38250 |
| 2007 | 80549 |
| 2008 | 151246 |
| 2009 | |
| 2010 | 171316 |
| 2011 | 427556 |
| 2012 | 428495 |
| 2013 | 511334 |
| 2014 | 420198 |
| 2015 | 237352 |
| 2016 | 215280 |
| 2017 | 234686 |
| 2018 | 196391 |