47% (1974)

47% (1995)

60% (1966)

55% (1970)

50% (1966)

65% (1962)

43% (1969)

64% (1965)

40% (1969)

58% (1970)

60% (1970)

57% (1979)

54% (1967)

40% (1977)

60% (1967)

53% (1967)

63% (1966)

58% (1975)

67% (1966)

67% (1962)