65% (1983)

70% (1982)

77% (1989)

60% (1969)

15% (1977)

65% (1986)

41% (1977)

50% (1987)

60% (1980)

82% (1988)

80% (1984)

63% (1977)

93% (1990)

64% (1983)

68% (1973)

0% (1975)

0% (1975)

80% (1980)

0% (1974)

50% (1977)