1997 4
1994 0
1993 4
1992 2
1992 1
1989 4
1989 1
1987 1
1986 6
1985 3
1984 3
1984 2
1984 0
1984 1
1983 3
1983 2
1981 2
1980 0
1975 1
1975 2
1968 3
1964 1
1961 1
1960 5