50% (1979)

72% (1986)

100% (1972)

63% (1990)

52% (1984)

46% (1978)

49% (1967)

0% (1980)

60% (1971)

50% (1985)

45% (1980)

0% (1981)

58% (1966)

46% (1979)

50% (1983)

0% (1972)

0% (1990)

70% (1975)

60% (1960)

0% (1987)