| 年度 | 实际值 |
|---|---|
| 1993 | 1886 |
| 1994 | 1872 |
| 1995 | 1948 |
| 1996 | 2753 |
| 1997 | 2368 |
| 1998 | 2719 |
| 1999 | 2370 |
| 2000 | 2309 |
| 2001 | 2359 |
| 2002 | 1682 |
| 2003 | 1639 |
| 2004 | 1986 |
| 2005 | 1974 |
| 2006 | 1607 |
| 2007 | 2335 |
| 2008 | 2385 |
| 2009 | |
| 2010 | 2719 |
| 2011 | 3496 |
| 2012 | 3777 |
| 2013 | 4260 |
| 2014 | 4586 |
| 2015 | 4805 |
| 2016 | 4740 |
| 2017 | 5068 |
| 2018 | 5462 |