61% (1972)

71% (1970)

58% (1969)

79% (1981)

50% (1969)

54% (1986)

58% (1968)

50% (1964)

52% (1972)

78% (1988)

50% (1971)

55% (1975)

50% (1962)

20% (1974)

60% (1972)

0% (1970)

0% (1987)

0% (1975)

0% (1968)

0% (1974)