| 年度 | 实际值 |
|---|---|
| 1993 | 2749 |
| 1994 | 2810 |
| 1995 | 2834 |
| 1996 | 3016 |
| 1997 | 3129 |
| 1998 | 3106 |
| 1999 | 3287 |
| 2000 | 3441 |
| 2001 | 3531 |
| 2002 | 2024 |
| 2003 | 2116 |
| 2004 | 2135 |
| 2005 | 2426 |
| 2006 | 3010 |
| 2007 | 2847 |
| 2008 | 2106 |
| 2009 | |
| 2010 | 2606 |
| 2011 | 3654 |
| 2012 | 3661 |
| 2013 | 3776 |
| 2014 | 3872 |
| 2015 | 3938 |
| 2016 | 3945 |
| 2017 | 4060 |
| 2018 | 4177 |