48% (1980)

50% (1986)

48% (1973)

67% (1969)

44% (1982)

65% (1992)

63% (1967)

50% (1975)

58% (1971)

0% (1982)

50% (1984)

50% (1970)

80% (1990)

62% (1961)

64% (1956)

0% (1987)

50% (1964)

57% (1978)

0% (1975)

53% (1988)