| 年度 | 实际值 |
|---|---|
| 1993 | 63000 |
| 1994 | 90900 |
| 1995 | 89300 |
| 1996 | 90000 |
| 1997 | 85000 |
| 1998 | 81100 |
| 1999 | 70000 |
| 2000 | 67100 |
| 2001 | 60700 |
| 2002 | 56200 |
| 2003 | 50000 |
| 2004 | 5 |
| 2005 | 50100 |
| 2006 | 49400 |
| 2007 | 48800 |
| 2008 | 48200 |
| 2009 | |
| 2010 | 47200 |
| 2011 | 46700 |
| 2012 | 46600 |
| 2013 | 46400 |
| 2014 | 47100 |
| 2015 | |
| 2016 | 48000 |