| 年度 | 实际值 |
|---|---|
| 1993 | 1928 |
| 1994 | 2020 |
| 1995 | 2056 |
| 1996 | 2033 |
| 1997 | 2014 |
| 1998 | 2064 |
| 1999 | 2067 |
| 2000 | 2017 |
| 2001 | 2068 |
| 2002 | 7000 |
| 2003 | 7577 |
| 2004 | 7318 |
| 2005 | 7449 |
| 2006 | 7948 |
| 2007 | 10066 |
| 2008 | 10666 |
| 2009 | |
| 2010 | 11391 |
| 2011 | 12541 |
| 2012 | 13344 |
| 2013 | 14350 |
| 2014 | 14944 |
| 2015 | 15427 |
| 2016 | 16534 |
| 2017 | 18134 |
| 2018 | 20001 |