70% (1984)

41% (1977)

62% (1985)

60% (1980)

80% (1977)

0% (1979)

68% (1968)

80% (1982)

100% (1973)

78% (1987)

0% (1965)

85% (1980)

60% (1968)

50% (1987)

93% (1977)

10% (1972)

90% (1961)

10% (1978)

0% (1967)

0% (1982)