| 年度 | 实际值 |
|---|---|
| 1985 | 3678 |
| 1986 | 5260 |
| 1987 | 5574 |
| 1988 | 7622 |
| 1989 | 8042 |
| 1990 | 9142 |
| 1991 | 9800 |
| 1992 | 14706 |
| 1993 | 9350 |
| 1994 | 10283 |
| 1995 | 11605 |
| 1996 | 12310 |
| 1997 | 13368 |
| 1998 | 15687 |
| 1999 | 12087 |
| 2000 | 10665 |
| 2001 | 44313 |
| 2002 | 39988 |
| 2003 | 40913 |
| 2004 | 42687 |
| 2005 | 42863 |
| 2006 | 44428 |
| 2007 | 48758 |
| 2008 | 47914 |
| 2009 | 49716 |
| 2010 | 55859 |
| 2011 | 61976 |
| 2012 | 55645 |
| 2013 | 59656 |
| 2014 | 58413 |
| 2015 | 45980 |