| 年度 | 实际值 |
|---|---|
| 1993 | 3064 |
| 1994 | 3184 |
| 1995 | 3107 |
| 1996 | 3109 |
| 1997 | 3277 |
| 1998 | 3284 |
| 1999 | 2896 |
| 2000 | 3379 |
| 2001 | 3003 |
| 2002 | 2949 |
| 2003 | 3119 |
| 2004 | 3076 |
| 2005 | 3121 |
| 2006 | 3144 |
| 2007 | 3690 |
| 2008 | 3735 |
| 2009 | |
| 2010 | 4106 |
| 2011 | 4301 |
| 2012 | 6686 |
| 2013 | 6965 |
| 2014 | 6967 |
| 2015 | 7225 |
| 2016 | 7484 |
| 2017 | 7493 |
| 2018 | 7858 |