| 年度 | 实际值 |
|---|---|
| 1978 | 1532 |
| 1979 | |
| 1980 | |
| 1981 | |
| 1982 | |
| 1983 | |
| 1984 | |
| 1985 | 3722 |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | |
| 1990 | 12445 |
| 1991 | |
| 1992 | |
| 1993 | |
| 1994 | |
| 1995 | 30876 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 24726 |
| 2000 | 25482 |
| 2001 | 30132 |
| 2002 | 35214 |
| 2003 | 43776 |
| 2004 | 50164 |
| 2005 | 57532 |
| 2006 | 71961 |
| 2007 | 84704 |
| 2008 | 115480 |
| 2009 | 151542 |
| 2010 | 177953 |
| 2011 | 223100 |
| 2012 | 284200 |
| 2013 | 305700 |
| 2014 | 312700 |