55% (1986)

60% (1966)

90% (1987)

46% (1980)

73% (1969)

77% (1990)

70% (1980)

0% (1979)

65% (1984)

70% (1973)

70% (1985)

75% (1989)

95% (1984)

50% (1976)

80% (1983)

80% (1991)

90% (1986)

83% (1984)

70% (1971)

50% (1985)