| 年度 | 实际值 |
|---|---|
| 1993 | 1395 |
| 1994 | 2011 |
| 1995 | 1722 |
| 1996 | 8901 |
| 1997 | 7872 |
| 1998 | 7637 |
| 1999 | 7837 |
| 2000 | 6144 |
| 2001 | 6249 |
| 2002 | 4371 |
| 2003 | 4609 |
| 2004 | 5293 |
| 2005 | 5551 |
| 2006 | 6054 |
| 2007 | 6046 |
| 2008 | 6307 |
| 2009 | |
| 2010 | 7913 |
| 2011 | 7498 |
| 2012 | 9513 |
| 2013 | 10254 |
| 2014 | 10899 |
| 2015 | 11430 |
| 2016 | 13181 |
| 2017 | 13915 |
| 2018 | 15403 |