35% (1968)

38% (1977)

35% (1969)

77% (1981)

40% (1973)

53% (1962)

32% (1966)

48% (1978)

47% (1969)

48% (1970)

50% (1962)

0% (1976)

40% (1975)

10% (1970)

32% (1985)

39% (1965)

40% (1971)

0% (1971)

71% (1961)

0% (1973)