| 年度 | 实际值 |
|---|---|
| 1992 | 3014 |
| 1993 | 3460 |
| 1994 | 5554 |
| 1995 | 5598 |
| 1996 | 4639 |
| 1997 | 6636 |
| 1998 | 9183 |
| 1999 | 38699 |
| 2000 | 42927 |
| 2001 | 51050 |
| 2002 | 59466 |
| 2003 | 61361 |
| 2004 | 67432 |
| 2005 | 74155 |
| 2006 | 89539 |
| 2007 | 133129 |
| 2008 | 164817 |
| 2009 | 211695 |
| 2010 | 228393 |
| 2011 | 285476 |
| 2012 | 389925 |
| 2013 | 398322 |
| 2014 | 446923 |
| 2015 | 550361 |
| 2016 | 550790 |
| 2017 | 601554 |
| 2018 | 634350 |