| 年度 | 实际值 |
|---|---|
| 1993 | 1689 |
| 1994 | 1815 |
| 1995 | 1856 |
| 1996 | 1931 |
| 1997 | 2018 |
| 1998 | 1435 |
| 1999 | 1592 |
| 2000 | 1623 |
| 2001 | 1470 |
| 2002 | 1322 |
| 2003 | 1329 |
| 2004 | 1520 |
| 2005 | 2073 |
| 2006 | 1932 |
| 2007 | 2285 |
| 2008 | 2397 |
| 2009 | |
| 2010 | 2512 |
| 2011 | 2698 |
| 2012 | 2800 |
| 2013 | 3053 |
| 2014 | 3192 |
| 2015 | 3361 |
| 2016 | 3480 |
| 2017 | 3756 |
| 2018 | 3991 |