| 年度 | 实际值 |
|---|---|
| 1993 | 1392 |
| 1994 | |
| 1995 | 1570 |
| 1996 | 1476 |
| 1997 | 1377 |
| 1998 | 1110 |
| 1999 | 1233 |
| 2000 | 1285 |
| 2001 | 1371 |
| 2002 | 1351 |
| 2003 | 1141 |
| 2004 | 1255 |
| 2005 | 1303 |
| 2006 | 1198 |
| 2007 | 1415 |
| 2008 | 1252 |
| 2009 | |
| 2010 | 1169 |
| 2011 | 1155 |
| 2012 | 1673 |
| 2013 | 1647 |
| 2014 | 1699 |
| 2015 | 1648 |
| 2016 | 1605 |
| 2017 | 1789 |
| 2018 | 1761 |