| 年度 | 实际值 |
|---|---|
| 1978 | 4566 |
| 1979 | |
| 1980 | 8305 |
| 1981 | |
| 1982 | |
| 1983 | |
| 1984 | |
| 1985 | 21988 |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | |
| 1990 | 23886 |
| 1991 | |
| 1992 | |
| 1993 | |
| 1994 | |
| 1995 | 159643 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 444087 |
| 2000 | 319361 |
| 2001 | 273300 |
| 2002 | 258952 |
| 2003 | 238756 |
| 2004 | 239627 |
| 2005 | 233759 |
| 2006 | 348550 |
| 2007 | 246217 |
| 2008 | 575704 |
| 2009 | 563388 |
| 2010 | 340981 |