| 年度 | 实际值 |
|---|---|
| 1993 | 2117 |
| 1994 | 2874 |
| 1995 | 2832 |
| 1996 | 2857 |
| 1997 | 3076 |
| 1998 | 3038 |
| 1999 | 2973 |
| 2000 | 2964 |
| 2001 | 5734 |
| 2002 | 2332 |
| 2003 | 1819 |
| 2004 | 1871 |
| 2005 | 2901 |
| 2006 | 2380 |
| 2007 | 2922 |
| 2008 | 2946 |
| 2009 | |
| 2010 | 3151 |
| 2011 | 3982 |
| 2012 | 4013 |
| 2013 | 4571 |
| 2014 | 4926 |
| 2015 | 3514 |
| 2016 | 4789 |
| 2017 | 5625 |
| 2018 | 6035 |