85% (1975)

62% (1982)

42% (1985)

72% (1983)

74% (1991)

83% (1991)

0% (1987)

61% (1991)

80% (1972)

40% (1984)

65% (1977)

70% (1979)

84% (1967)

50% (1987)

20% (1985)

55% (1977)

45% (1985)

0% (1975)

50% (1985)

90% (1969)