| 年度 | 实际值 |
|---|---|
| 1993 | 1612 |
| 1994 | 1656 |
| 1995 | 1725 |
| 1996 | 1696 |
| 1997 | 1441 |
| 1998 | 1741 |
| 1999 | 1698 |
| 2000 | 1644 |
| 2001 | 1663 |
| 2002 | 1256 |
| 2003 | 1258 |
| 2004 | 1260 |
| 2005 | 1672 |
| 2006 | 1680 |
| 2007 | 1590 |
| 2008 | 1729 |
| 2009 | |
| 2010 | 1834 |
| 2011 | 1883 |
| 2012 | 1913 |
| 2013 | 2023 |
| 2014 | 2162 |
| 2015 | 2218 |
| 2016 | 3314 |
| 2017 | 3337 |
| 2018 | 3546 |