| 年度 | 实际值 |
|---|---|
| 1995 | 2985 |
| 1996 | 404 |
| 1997 | 598 |
| 1998 | 5198 |
| 1999 | 15254 |
| 2000 | 3618 |
| 2001 | 5753 |
| 2002 | 1446 |
| 2003 | 3477 |
| 2004 | 2843 |
| 2005 | 38661 |
| 2006 | 47440 |
| 2007 | 61914 |
| 2008 | 90359 |
| 2009 | |
| 2010 | 224903 |
| 2011 | 24532 |
| 2012 | 445183 |
| 2013 | 679974 |
| 2014 | 587502 |
| 2015 | 314491 |
| 2016 | 399445 |
| 2017 | 433919 |
| 2018 | 770400 |