54% (1973)

64% (1980)

0% (1964)

54% (1973)

40% (1984)

60% (1973)

60% (1975)

30% (1990)

68% (1976)

72% (1976)

40% (1973)

10% (1966)

0% (1972)

40% (1973)

0% (1975)

63% (1971)

0% (1984)

45% (1971)

0% (1967)

65% (1980)