| 年度 | 实际值 |
|---|---|
| 1978 | 1023 |
| 1979 | 1301 |
| 1980 | 2199 |
| 1981 | 2346 |
| 1982 | 4216 |
| 1983 | 4827 |
| 1984 | 4368 |
| 1985 | 3912 |
| 1986 | 5011 |
| 1987 | 6348 |
| 1988 | 9102 |
| 1989 | 6605 |
| 1990 | 8035 |
| 1991 | 9764 |
| 1992 | 14925 |
| 1993 | 18107 |
| 1994 | 26564 |
| 1995 | 32181 |
| 1996 | 44536 |
| 1997 | 50639 |
| 1998 | 58419 |
| 1999 | 63287 |
| 2000 | 69103 |
| 2001 | 66092 |
| 2002 | 62606 |
| 2003 | 66339 |
| 2004 | 70227 |
| 2005 | 68052 |
| 2006 | 64354 |
| 2007 | 67031 |
| 2008 | 65452 |
| 2009 | 78556 |
| 2010 | 80439 |
| 2011 | 88155 |
| 2012 | 88785 |
| 2013 | 93316 |
| 2014 | 98110 |
| 2015 | 119351 |