10% (1965)

0% (1984)

100% (1973)

64% (1987)

85% (1980)

70% (1984)

0% (1988)

0% (1982)

20% (1987)

70% (1971)

60% (1979)

90% (1988)

50% (1987)

50% (1986)

70% (1969)

0% (1971)

0% (1969)

80% (1968)

68% (1984)

0% (1975)