80% (1966)

77% (1958)

66% (1995)

67% (1971)

70% (1965)

54% (1949)

47% (1996)

69% (1965)

66% (1976)

68% (1954)

63% (1972)

66% (1969)

60% (1979)

48% (1970)

63% (1987)

73% (1951)

56% (1972)

52% (1996)

70% (1959)

65% (1954)