72% (1994)

78% (1980)

48% (1980)

62% (1977)

52% (1958)

46% (1977)

70% (1979)

56% (1971)

62% (1974)

66% (1979)

0% (1989)

0% (1982)

0% (1988)

56% (1960)

63% (1969)

0% (1980)

57% (1974)

40% (1979)

58% (1960)

69% (1975)