| 年度 | 实际值 |
|---|---|
| 1992 | 15656 |
| 1993 | 18853 |
| 1994 | 11852 |
| 1995 | 12827 |
| 1996 | 16480 |
| 1997 | 18062 |
| 1998 | 18568 |
| 1999 | 20730 |
| 2000 | 37544 |
| 2001 | 60336 |
| 2002 | 60682 |
| 2003 | 73186 |
| 2004 | 91567 |
| 2005 | 110745 |
| 2006 | 136763 |
| 2007 | 221599 |
| 2008 | 274541 |
| 2009 | 322533 |
| 2010 | 330764 |
| 2011 | 406064 |
| 2012 | 547062 |
| 2013 | 524266 |
| 2014 | 490143 |
| 2015 | 562400 |
| 2016 | 599423 |
| 2017 | 582762 |
| 2018 | 629735 |