| 年度 | 实际值 |
|---|---|
| 1993 | 1335 |
| 1994 | 1805 |
| 1995 | 1961 |
| 1996 | 2082 |
| 1997 | 2067 |
| 1998 | 1500 |
| 1999 | 1610 |
| 2000 | 1221 |
| 2001 | 1428 |
| 2002 | 1549 |
| 2003 | 1629 |
| 2004 | 1610 |
| 2005 | 1620 |
| 2006 | 1632 |
| 2007 | 1346 |
| 2008 | 1299 |
| 2009 | |
| 2010 | 1815 |
| 2011 | 1435 |
| 2012 | 1514 |
| 2013 | 2611 |
| 2014 | 2701 |
| 2015 | 2756 |
| 2016 | 2678 |
| 2017 | 2721 |
| 2018 | 2775 |