73% (1989)

46% (1973)

63% (1985)

67% (1976)

62% (1975)

50% (1979)

0% (1980)

68% (1989)

41% (1976)

73% (1987)

58% (1991)

35% (1972)

76% (1977)

10% (1981)

0% (1972)

66% (1988)

56% (1974)

50% (1984)

0% (1965)

57% (1974)