85% (1975)

0% (1982)

65% (1977)

0% (1987)

72% (1983)

74% (1991)

84% (1967)

83% (1991)

50% (1986)

50% (1987)

71% (1978)

0% (1983)

0% (1982)

54% (1985)

50% (1988)

53% (1985)

65% (1985)

63% (1980)

80% (1979)

0% (1988)