65% (1970)

64% (1960)

51% (1987)

70% (1965)

50% (1972)

67% (1978)

55% (1977)

40% (1970)

60% (1975)

45% (1986)

60% (1979)

64% (1983)

63% (1971)

72% (1967)

0% (1965)

50% (1967)

40% (1985)

50% (1980)

63% (1976)

52% (1977)