60% (1986)

85% (1988)

75% (1986)

62% (1992)

76% (1964)

73% (1981)

70% (1983)

71% (1973)

63% (1993)

61% (1991)

71% (1965)

62% (1985)

76% (1989)

64% (1982)

69% (1983)

75% (1964)

56% (1994)

69% (1986)

74% (1987)

67% (1972)