| 年度 | 实际值 |
|---|---|
| 1993 | 1368 |
| 1994 | 1370 |
| 1995 | 1368 |
| 1996 | 1351 |
| 1997 | 1375 |
| 1998 | 1378 |
| 1999 | 1367 |
| 2000 | 1206 |
| 2001 | 1169 |
| 2002 | 1218 |
| 2003 | 1259 |
| 2004 | 1453 |
| 2005 | 1494 |
| 2006 | 1427 |
| 2007 | 1328 |
| 2008 | 1480 |
| 2009 | |
| 2010 | 1457 |
| 2011 | 2460 |
| 2012 | 1391 |
| 2013 | 1893 |
| 2014 | 2008 |
| 2015 | 2015 |
| 2016 | 2918 |
| 2017 | 1752 |
| 2018 | 1812 |