0% (1980)

50% (1977)

68% (1973)

55% (1986)

58% (1991)

63% (1977)

33% (1974)

80% (1983)

60% (1984)

0% (1979)

0% (1974)

90% (1983)

50% (1975)

60% (1969)

93% (1990)

50% (1987)

80% (1991)

0% (1984)

90% (1988)

45% (1971)