| 年度 | 实际值 |
|---|---|
| 1992 | 2855 |
| 1993 | 3606 |
| 1994 | 2281 |
| 1995 | 2763 |
| 1996 | 1945 |
| 1997 | 3393 |
| 1998 | 3997 |
| 1999 | 4822 |
| 2000 | |
| 2001 | |
| 2002 | |
| 2003 | 19385 |
| 2004 | 21715 |
| 2005 | 26298 |
| 2006 | 33211 |
| 2007 | 50469 |
| 2008 | 61073 |
| 2009 | |
| 2010 | 94143 |
| 2011 | 145051 |
| 2012 | 166482 |
| 2013 | 197388 |
| 2014 | 202858 |
| 2015 | 181553 |
| 2016 | 183212 |
| 2017 | 195880 |
| 2018 | 221373 |