| 年度 | 实际值 |
|---|---|
| 1982 | 605 |
| 1983 | 845 |
| 1984 | 1377 |
| 1985 | 1700 |
| 1986 | 2869 |
| 1987 | 3015 |
| 1988 | 3844 |
| 1989 | 4739 |
| 1990 | 5698 |
| 1991 | 7032 |
| 1992 | 8081 |
| 1993 | 11003 |
| 1994 | 12858 |
| 1995 | 16757 |
| 1996 | 19310 |
| 1997 | 23673 |
| 1998 | 27698 |
| 1999 | 34217 |
| 2000 | 51226 |
| 2001 | 49562 |
| 2002 | 42165 |
| 2003 | 57924 |
| 2004 | 56492 |
| 2005 | 68652 |
| 2006 | 78277 |
| 2007 | 87948 |
| 2008 | 95755 |
| 2009 | 141630 |
| 2010 | 176392 |
| 2011 | 187284 |
| 2012 | 204204 |
| 2013 | 253593 |
| 2014 | 280865 |
| 2015 | 309224 |