| 年度 | 实际值 |
|---|---|
| 1993 | 1450 |
| 1994 | 1477 |
| 1995 | 1412 |
| 1996 | 1308 |
| 1997 | |
| 1998 | 1405 |
| 1999 | 1349 |
| 2000 | 1649 |
| 2001 | 1678 |
| 2002 | 1611 |
| 2003 | 1664 |
| 2004 | 1537 |
| 2005 | 1527 |
| 2006 | 1538 |
| 2007 | 1706 |
| 2008 | 1839 |
| 2009 | |
| 2010 | 1875 |
| 2011 | 1931 |
| 2012 | 2231 |
| 2013 | 1876 |
| 2014 | 2525 |
| 2015 | 2620 |
| 2016 | 2881 |
| 2017 | 3201 |
| 2018 | 4176 |