| 年度 | 实际值 |
|---|---|
| 1993 | 1727 |
| 1994 | 1962 |
| 1995 | 1982 |
| 1996 | 1787 |
| 1997 | 2093 |
| 1998 | 2244 |
| 1999 | 2287 |
| 2000 | 2567 |
| 2001 | 2663 |
| 2002 | 1811 |
| 2003 | 1740 |
| 2004 | 1697 |
| 2005 | 2354 |
| 2006 | 2372 |
| 2007 | |
| 2008 | 7020 |
| 2009 | |
| 2010 | 8236 |
| 2011 | 3323 |
| 2012 | 3603 |
| 2013 | 4223 |
| 2014 | 4360 |
| 2015 | 4519 |
| 2016 | 4787 |
| 2017 | 5201 |
| 2018 | 5631 |