78% (1970)

78% (1979)

68% (1967)

60% (1984)

50% (1972)

72% (1987)

85% (1977)

100% (1976)

0% (1987)

58% (1959)

40% (1969)

81% (1986)

70% (1974)

0% (1970)

0% (1971)

0% (1988)

0% (1992)

0% (1986)

63% (1974)

0% (1959)