59% (1980)

34% (1969)

10% (1979)

39% (1978)

48% (1960)

30% (1963)

43% (1982)

41% (1980)

10% (1962)

45% (1961)

50% (1983)

48% (1985)

37% (1986)

45% (1969)

48% (1968)

65% (1980)

54% (1973)

57% (1962)

37% (1985)

40% (1994)