0% (1970)

63% (1971)

57% (1977)

80% (1980)

0% (1970)

0% (1983)

0% (1980)

0% (1973)

0% (1986)

0% (1973)

65% (1983)

0% (1975)

0% (1980)

58% (1987)

50% (1986)

0% (1994)

23% (1979)

70% (1989)

65% (1980)

0% (1976)