| 年度 | 实际值 |
|---|---|
| 1978 | 327 |
| 1979 | |
| 1980 | |
| 1981 | |
| 1982 | |
| 1983 | |
| 1984 | |
| 1985 | 2433 |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | |
| 1990 | 6812 |
| 1991 | |
| 1992 | |
| 1993 | |
| 1994 | |
| 1995 | 11342 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 23725 |
| 2000 | 27373 |
| 2001 | 29692 |
| 2002 | 26642 |
| 2003 | 29837 |
| 2004 | 39818 |
| 2005 | 51772 |
| 2006 | 66090 |
| 2007 | 86263 |
| 2008 | 109269 |
| 2009 | 130046 |
| 2010 | 170018 |
| 2011 | 220000 |
| 2012 | 266400 |
| 2013 | 325100 |
| 2014 | 345900 |