60% (1986)

85% (1988)

75% (1986)

76% (1964)

62% (1992)

76% (1989)

60% (1978)

73% (1981)

75% (1964)

63% (1993)

70% (1983)

71% (1973)

60% (1974)

61% (1991)

74% (1987)

56% (1994)

67% (1952)

65% (1969)

64% (1962)

69% (1983)