| 年度 | 实际值 |
|---|---|
| 1981 | 78767 |
| 1982 | 79440 |
| 1983 | 76220 |
| 1984 | 67047 |
| 1985 | 67967 |
| 1986 | 72113 |
| 1987 | 72627 |
| 1988 | 68287 |
| 1989 | 71327 |
| 1990 | 73680 |
| 1991 | 70987 |
| 1992 | 70340 |
| 1993 | 61220 |
| 1994 | 61890 |
| 1995 | 62220 |
| 1996 | 61200 |
| 1997 | 62270 |
| 1998 | 60853 |
| 1999 | 59747 |
| 2000 | 58939 |
| 2001 | 54330 |
| 2002 | 52899 |
| 2003 | 47136 |
| 2004 | 49051 |
| 2005 | 48033 |
| 2006 | 44981 |
| 2007 | 41384 |
| 2008 | 43978 |
| 2009 | 44478 |
| 2010 | 44504 |
| 2011 | 44018 |
| 2012 | 43727 |
| 2013 | 43794 |
| 2014 | 38121 |
| 2015 | 37713 |
| 2016 | 38810 |