| 年度 | 实际值 |
|---|---|
| 1978 | 471 |
| 1979 | 523 |
| 1980 | 633 |
| 1981 | 678 |
| 1982 | 696 |
| 1983 | 803 |
| 1984 | 841 |
| 1985 | 1005 |
| 1986 | 1167 |
| 1987 | 1327 |
| 1988 | 1633 |
| 1989 | 1817 |
| 1990 | 1935 |
| 1991 | 2103 |
| 1992 | 2575 |
| 1993 | 3753 |
| 1994 | 5214 |
| 1995 | 6373 |
| 1996 | 7340 |
| 1997 | 8445 |
| 1998 | 9226 |
| 1999 | 11535 |
| 2000 | 11790 |
| 2001 | 16399 |
| 2002 | 19271 |
| 2003 | 20299 |
| 2004 | 15319 |
| 2005 | 16564 |
| 2006 | 18441 |
| 2007 | 21658 |
| 2008 | 24227 |
| 2009 | 30300 |
| 2010 | 31927 |
| 2011 | 36166 |
| 2012 | 40925 |
| 2013 | 48586 |
| 2014 | 54948 |
| 2015 | 56755 |