61% (1972)

73% (1990)

57% (1968)

58% (1971)

64% (1968)

72% (1970)

63% (1959)

53% (1962)

61% (1958)

61% (1959)

69% (1970)

74% (1958)

59% (1965)

50% (1969)

63% (1964)

69% (1960)

64% (1966)

73% (2006)

58% (1972)

64% (1964)