| 年度 | 实际值 |
|---|---|
| 1993 | 2593 |
| 1994 | 2712 |
| 1995 | 2772 |
| 1996 | 2873 |
| 1997 | 3057 |
| 1998 | 2968 |
| 1999 | 3438 |
| 2000 | 2995 |
| 2001 | 2995 |
| 2002 | 2731 |
| 2003 | 4916 |
| 2004 | 4562 |
| 2005 | 4993 |
| 2006 | 5094 |
| 2007 | 4800 |
| 2008 | 4291 |
| 2009 | |
| 2010 | 4379 |
| 2011 | 6045 |
| 2012 | 5924 |
| 2013 | 8380 |
| 2014 | 8476 |
| 2015 | 8640 |
| 2016 | 9206 |
| 2017 | 9603 |
| 2018 | 10342 |