| 年度 | 实际值 |
|---|---|
| 1993 | 1598 |
| 1994 | 1647 |
| 1995 | 1810 |
| 1996 | 2066 |
| 1997 | 2208 |
| 1998 | 2167 |
| 1999 | 2173 |
| 2000 | 2261 |
| 2001 | 1830 |
| 2002 | 1960 |
| 2003 | 1961 |
| 2004 | 2060 |
| 2005 | 1816 |
| 2006 | 2480 |
| 2007 | 2629 |
| 2008 | 2808 |
| 2009 | |
| 2010 | 3028 |
| 2011 | 3064 |
| 2012 | 2618 |
| 2013 | 2580 |
| 2014 | 2690 |
| 2015 | 2725 |
| 2016 | 2776 |
| 2017 | 2882 |
| 2018 | 2969 |