| 年度 | 实际值 |
|---|---|
| 1978 | 572 |
| 1979 | |
| 1980 | |
| 1981 | |
| 1982 | |
| 1983 | |
| 1984 | |
| 1985 | 1632 |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | |
| 1990 | 4875 |
| 1991 | |
| 1992 | |
| 1993 | |
| 1994 | |
| 1995 | 10442 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 16398 |
| 2000 | 17402 |
| 2001 | 21497 |
| 2002 | 22694 |
| 2003 | 27940 |
| 2004 | 32826 |
| 2005 | 39496 |
| 2006 | 51175 |
| 2007 | 68277 |
| 2008 | 85871 |
| 2009 | 114346 |
| 2010 | 136687 |
| 2011 | 164300 |
| 2012 | 204900 |
| 2013 | 262100 |
| 2014 | 275300 |