59% (2001)

68% (1988)

80% (1978)

59% (1964)

46% (1978)

0% (1987)

58% (1963)

63% (1980)

65% (1971)

70% (1968)

80% (1948)

52% (1969)

79% (1951)

70% (1973)

42% (1971)

58% (1986)

60% (1965)

44% (1982)

0% (1976)

62% (1984)