| 年度 | 实际值 |
|---|---|
| 1993 | 1281 |
| 1994 | 1248 |
| 1995 | 1543 |
| 1996 | 1308 |
| 1997 | 1359 |
| 1998 | 1362 |
| 1999 | 804 |
| 2000 | 1098 |
| 2001 | 1034 |
| 2002 | 849 |
| 2003 | 1129 |
| 2004 | 1129 |
| 2005 | 1176 |
| 2006 | 1157 |
| 2007 | 1685 |
| 2008 | 1620 |
| 2009 | |
| 2010 | 1710 |
| 2011 | 1831 |
| 2012 | 1018 |
| 2013 | 1876 |
| 2014 | 1774 |
| 2015 | 2048 |
| 2016 | 1821 |
| 2017 | 1823 |
| 2018 | 1777 |