| 年度 | 实际值 |
|---|---|
| 1995 | 9380 |
| 1996 | 4552 |
| 1997 | 2697 |
| 1998 | 5205 |
| 1999 | 28165 |
| 2000 | 21364 |
| 2001 | 33033 |
| 2002 | 37246 |
| 2003 | 30784 |
| 2004 | 22030 |
| 2005 | 30153 |
| 2006 | 44154 |
| 2007 | 75562 |
| 2008 | 78450 |
| 2009 | 56054 |
| 2010 | 66062 |
| 2011 | 93099 |
| 2012 | 110806 |
| 2013 | 133494 |
| 2014 | 249480 |
| 2015 | 275879 |
| 2016 | 241223 |
| 2017 | 298276 |
| 2018 | 308505 |