1987 7.8

1998 7.8

1985 7.8

1988 7.8

1983 7.8

2004 7.8

1981 7.8

1988 7.8

1982 7.8

1993 7.8

1962 7.8

1964 7.8

1981 7.8

1984 7.8

1980 7.8

1992 7.8

1965 7.8

1994 7.8

1999 7.9

1984 7.9