77% (1986)

57% (1967)

65% (1951)

73% (1966)

65% (1996)

73% (1953)

58% (1964)

65% (1966)

57% (1969)

66% (1967)

50% (1972)

71% (1955)

65% (1989)

63% (1981)

65% (1966)

56% (1988)

74% (1966)

54% (1960)

80% (1986)

57% (1968)