73% (1981)

60% (1968)

76% (1976)

77% (1970)

72% (1966)

70% (1971)

65% (1974)

61% (1968)

72% (1970)

65% (1968)

69% (1970)

69% (1969)

69% (1967)

69% (2023)

61% (1972)

59% (1967)

39% (1971)

67% (1967)

54% (1971)

60% (1971)