| 年度 | 实际值 |
|---|---|
| 1993 | 2622 |
| 1994 | 2749 |
| 1995 | 2176 |
| 1996 | 2062 |
| 1997 | 2336 |
| 1998 | 2385 |
| 1999 | 2488 |
| 2000 | 2719 |
| 2001 | 2841 |
| 2002 | 2493 |
| 2003 | 2250 |
| 2004 | 2560 |
| 2005 | 3069 |
| 2006 | 3774 |
| 2007 | 3512 |
| 2008 | 2883 |
| 2009 | |
| 2010 | 2769 |
| 2011 | 3068 |
| 2012 | 4184 |
| 2013 | 4547 |
| 2014 | 4789 |
| 2015 | 5679 |
| 2016 | 5679 |
| 2017 | 5228 |
| 2018 | 5402 |