| 年度 | 实际值 |
|---|---|
| 1993 | 1197 |
| 1994 | 1208 |
| 1995 | 1218 |
| 1996 | 1423 |
| 1997 | 1101 |
| 1998 | 1196 |
| 1999 | 1077 |
| 2000 | 1097 |
| 2001 | 1198 |
| 2002 | 1122 |
| 2003 | 1122 |
| 2004 | 1219 |
| 2005 | 1038 |
| 2006 | 1133 |
| 2007 | 1257 |
| 2008 | 1293 |
| 2009 | |
| 2010 | 1396 |
| 2011 | 1476 |
| 2012 | 1674 |
| 2013 | 1859 |
| 2014 | 1831 |
| 2015 | 1825 |
| 2016 | 1834 |
| 2017 | 3582 |
| 2018 | 2469 |