52% (1972)

58% (1969)

62% (1972)

60% (1972)

54% (1986)

50% (1962)

71% (1970)

79% (1981)

0% (1978)

58% (1968)

50% (1969)

0% (1972)

0% (1970)

0% (1973)

0% (1972)

50% (1964)

50% (1971)

0% (1975)

0% (1979)

78% (1988)