| 年度 | 实际值 |
|---|---|
| 1978 | 2790 |
| 1979 | |
| 1980 | 2902 |
| 1981 | |
| 1982 | |
| 1983 | |
| 1984 | |
| 1985 | 6360 |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | |
| 1990 | 28640 |
| 1991 | |
| 1992 | |
| 1993 | |
| 1994 | |
| 1995 | 100588 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 166181 |
| 2000 | 201231 |
| 2001 | 161112 |
| 2002 | 124325 |
| 2003 | 189584 |
| 2004 | 257125 |
| 2005 | 284984 |
| 2006 | 224477 |
| 2007 | 267827 |
| 2008 | 308701 |
| 2009 | 531496 |
| 2010 | 1033886 |