| 年度 | 实际值 |
|---|---|
| 1993 | 1216 |
| 1994 | 1043 |
| 1995 | 1383 |
| 1996 | 2996 |
| 1997 | 1358 |
| 1998 | 909 |
| 1999 | 1500 |
| 2000 | 1793 |
| 2001 | 1831 |
| 2002 | 1218 |
| 2003 | 1464 |
| 2004 | 1557 |
| 2005 | 1540 |
| 2006 | 1554 |
| 2007 | 1683 |
| 2008 | 1537 |
| 2009 | |
| 2010 | 1567 |
| 2011 | 1811 |
| 2012 | 1811 |
| 2013 | 2018 |
| 2014 | 1875 |
| 2015 | 1466 |
| 2016 | 2064 |
| 2017 | 2196 |
| 2018 | 2226 |