| 年度 | 实际值 |
|---|---|
| 1978 | 339 |
| 1979 | |
| 1980 | |
| 1981 | |
| 1982 | |
| 1983 | |
| 1984 | |
| 1985 | 1520 |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | |
| 1990 | 5173 |
| 1991 | |
| 1992 | |
| 1993 | |
| 1994 | |
| 1995 | 14891 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 25868 |
| 2000 | 32147 |
| 2001 | 33230 |
| 2002 | 35225 |
| 2003 | 35791 |
| 2004 | 44264 |
| 2005 | 58689 |
| 2006 | 77103 |
| 2007 | 91872 |
| 2008 | 144576 |
| 2009 | 163766 |
| 2010 | 198104 |
| 2011 | 251300 |
| 2012 | 291000 |
| 2013 | 369400 |
| 2014 | 355300 |