62% (1985)

68% (1968)

80% (1977)

41% (1977)

82% (1982)

85% (1980)

100% (1973)

0% (1979)

60% (1980)

78% (1987)

60% (1968)

93% (1977)

70% (1984)

50% (1987)

90% (1961)

0% (1965)

0% (1967)

10% (1978)

10% (1972)

0% (1982)