75% (1964)

70% (1971)

60% (1969)

72% (1983)

75% (1962)

82% (1958)

80% (1961)

60% (1965)

72% (1965)

71% (1974)

75% (1957)

59% (1959)

77% (1964)

72% (1958)

56% (1971)

63% (1973)

72% (1979)

76% (1963)

64% (1964)

69% (1960)