| 年度 | 实际值 |
|---|---|
| 1978 | 346 |
| 1979 | 450 |
| 1980 | 397 |
| 1981 | 430 |
| 1982 | 535 |
| 1983 | 559 |
| 1984 | 899 |
| 1985 | 1020 |
| 1986 | 1485 |
| 1987 | 1456 |
| 1988 | 1830 |
| 1989 | 2679 |
| 1990 | 2933 |
| 1991 | 2930 |
| 1992 | 3559 |
| 1993 | 4302 |
| 1994 | 3816 |
| 1995 | 5384 |
| 1996 | 6388 |
| 1997 | 7535 |
| 1998 | 8364 |
| 1999 | 8911 |
| 2000 | 11867 |
| 2001 | 9372 |
| 2002 | 18685 |
| 2003 | 25606 |
| 2004 | 25809 |
| 2005 | 30316 |
| 2006 | 38076 |
| 2007 | 52618 |
| 2008 | 60535 |
| 2009 | 63901 |
| 2010 | 85629 |
| 2011 | 112627 |
| 2012 | 131756 |
| 2013 | 154061 |
| 2014 | 167861 |
| 2015 | 187916 |
| 2016 | 203400 |