57% (1970)

67% (1967)

83% (1962)

70% (1967)

77% (1966)

54% (1968)

55% (1970)

51% (1970)

0% (1971)

74% (1963)

74% (1962)

56% (1960)

47% (1970)

63% (1963)

56% (1966)

64% (1966)

63% (1966)

56% (1969)

72% (1970)

60% (1965)