65% (1983)

80% (1977)

28% (1977)

0% (1985)

68% (1980)

50% (1974)

70% (1982)

70% (1971)

60% (1990)

10% (1979)

85% (1984)

55% (1988)

77% (1989)

73% (1969)

80% (1980)

83% (1984)

70% (1982)

77% (1987)

80% (1983)

90% (1986)