63% (1969)

64% (1968)

63% (1988)

45% (1982)

50% (1955)

71% (1965)

64% (1988)

88% (1989)

81% (1972)

66% (1987)

63% (1984)

50% (1978)

68% (1956)

50% (1962)

50% (1988)

0% (1976)

74% (1958)

73% (1988)

58% (1971)

42% (1986)