73% (1972)

74% (1966)

77% (1964)

74% (1965)

68% (1964)

67% (1963)

65% (1965)

62% (1964)

58% (1964)

63% (1963)

70% (1964)

46% (2016)

38% (1960)

62% (1962)

67% (1967)

46% (1961)

58% (1967)

73% (1970)

55% (1969)

69% (1970)