53% (1964)

70% (1965)

64% (1964)

57% (1977)

59% (1966)

70% (1979)

62% (1959)

72% (1979)

70% (1959)

62% (1967)

69% (1961)

32% (1968)

72% (1958)

68% (1955)

67% (1983)

70% (1971)

58% (1972)

63% (1963)

75% (1975)

61% (1964)