| 年度 | 实际值 |
|---|---|
| 1978 | 375 |
| 1979 | 487 |
| 1980 | 521 |
| 1981 | 590 |
| 1982 | 657 |
| 1983 | 631 |
| 1984 | 767 |
| 1985 | 931 |
| 1986 | 993 |
| 1987 | 1133 |
| 1988 | 1533 |
| 1989 | 1733 |
| 1990 | 1829 |
| 1991 | 1872 |
| 1992 | 2338 |
| 1993 | 3029 |
| 1994 | 4218 |
| 1995 | 4834 |
| 1996 | 5707 |
| 1997 | 6951 |
| 1998 | 7960 |
| 1999 | 8795 |
| 2000 | 9818 |
| 2001 | 11992 |
| 2002 | 15798 |
| 2003 | 18373 |
| 2004 | 21241 |
| 2005 | 24054 |
| 2006 | 27132 |
| 2007 | 28670 |
| 2008 | 33858 |
| 2009 | 37445 |
| 2010 | 41352 |
| 2011 | 44791 |
| 2012 | 53182 |
| 2013 | 61511 |
| 2014 | 68202 |
| 2015 | 81491 |