50% (1964)

80% (1987)

0% (1987)

67% (1965)

37% (1977)

80% (1969)

0% (1969)

73% (1971)

0% (1968)

0% (1961)

65% (1960)

50% (1986)

0% (1985)

45% (1960)

80% (1982)

0% (1977)

0% (1965)

70% (1961)

0% (1964)

81% (1976)