| | | | | | | | | | 1958 1 28 | | | | | | | 1976 18 | | | | | | | 638 | 618 96.8% | 167 | 70% 1980 ~ 1986 108 | 87 % | | | | | | | | | | | | | | | | | | | | | | | | 1980 | | | | | | | | | | | 1988 1997 | 100% 1000 ~ 1548 | 98% | 3 ~ 4 10 | | | | | | | 1990 | | | | | 4 | 4000 | | | | | | 3500 | 100 | | | 2000 | 87% 2001 266 | 95% 2002 321 | 98% | | | | | | 70% | 80% | | | | | | | | | 4000 ~ 5000 | | | 2004 | | | | | | | | | 834 | 287 | | | 2000 | 470 | | | | | 2003 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |