| 年度 | 实际值 |
|---|---|
| 1978 | 335 |
| 1979 | |
| 1980 | |
| 1981 | |
| 1982 | |
| 1983 | |
| 1984 | |
| 1985 | 2580 |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | |
| 1990 | 18238 |
| 1991 | |
| 1992 | |
| 1993 | |
| 1994 | |
| 1995 | 38732 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 64441 |
| 2000 | 63344 |
| 2001 | 66592 |
| 2002 | 62778 |
| 2003 | 64309 |
| 2004 | 75913 |
| 2005 | 83147 |
| 2006 | 101263 |
| 2007 | 117093 |
| 2008 | 148170 |
| 2009 | 176842 |
| 2010 | 203460 |
| 2011 | 255000 |
| 2012 | 296000 |
| 2013 | 327700 |
| 2014 | 311200 |