66% (1964)

69% (1965)

72% (1982)

72% (1973)

69% (1963)

62% (1994)

68% (1978)

61% (1972)

63% (1975)

70% (1962)

67% (1972)

71% (1986)

71% (1981)

63% (1977)

64% (1968)

58% (1968)

62% (1964)

56% (1989)

56% (1987)

61% (1966)