| 年度 | 实际值 |
|---|---|
| 1993 | 2695 |
| 1994 | 2688 |
| 1995 | 3585 |
| 1996 | 2222 |
| 1997 | 2235 |
| 1998 | 2181 |
| 1999 | 2156 |
| 2000 | 2451 |
| 2001 | 2136 |
| 2002 | 1591 |
| 2003 | 1942 |
| 2004 | 2083 |
| 2005 | 1996 |
| 2006 | 1993 |
| 2007 | 2327 |
| 2008 | 2391 |
| 2009 | |
| 2010 | 2426 |
| 2011 | 2560 |
| 2012 | 2622 |
| 2013 | 2933 |
| 2014 | 3028 |
| 2015 | 3202 |
| 2016 | 3273 |
| 2017 | 3398 |
| 2018 | 3440 |