59% (1986)

84% (1988)

75% (1986)

62% (1992)

75% (1964)

72% (1981)

76% (1989)

70% (1973)

75% (1964)

70% (1983)

68% (1952)

74% (1987)

63% (1993)

69% (1983)

72% (1965)

55% (1991)

62% (1985)

56% (1994)

55% (1959)

62% (1980)