| 年度 | 实际值 |
|---|---|
| 1978 | 157 |
| 1979 | 175 |
| 1980 | 192 |
| 1981 | 267 |
| 1982 | 302 |
| 1983 | 326 |
| 1984 | 369 |
| 1985 | 474 |
| 1986 | 561 |
| 1987 | 659 |
| 1988 | 839 |
| 1989 | 927 |
| 1990 | 946 |
| 1991 | 1027 |
| 1992 | 1112 |
| 1993 | 1263 |
| 1994 | 1680 |
| 1995 | 2378 |
| 1996 | 2702 |
| 1997 | 2839 |
| 1998 | 2891 |
| 1999 | 2806 |
| 2000 | 3231 |
| 2001 | 3479 |
| 2002 | 3693 |
| 2003 | 4287 |
| 2004 | 4659 |
| 2005 | 5215 |
| 2006 | 5762 |
| 2007 | 6442 |
| 2008 | 7072 |
| 2009 | 7375 |
| 2010 | 8390 |
| 2011 | 9644 |
| 2012 | 10208 |
| 2013 | 12803 |
| 2014 | 14498 |
| 2015 | 16108 |