| 年度 | 实际值 |
|---|---|
| 1978 | 1981 |
| 1979 | 2380 |
| 1980 | 2841 |
| 1981 | 2926 |
| 1982 | 2664 |
| 1983 | 3462 |
| 1984 | 3343 |
| 1985 | 4649 |
| 1986 | 4354 |
| 1987 | 5720 |
| 1988 | 7297 |
| 1989 | 8357 |
| 1990 | 8227 |
| 1991 | 8391 |
| 1992 | 11447 |
| 1993 | 20526 |
| 1994 | 26743 |
| 1995 | 34711 |
| 1996 | 44751 |
| 1997 | 58338 |
| 1998 | 59003 |
| 1999 | 53882 |
| 2000 | 60500 |
| 2001 | 69398 |
| 2002 | 74700 |
| 2003 | 88200 |
| 2004 | 115591 |
| 2005 | 144100 |
| 2006 | 194460 |
| 2007 | 268756 |
| 2008 | 295232 |
| 2009 | 295706 |
| 2010 | 320167 |
| 2011 | 369824 |
| 2012 | 361388 |
| 2013 | 349856 |
| 2014 | 384589 |
| 2015 | 415814 |