46% (1970)

62% (1965)

64% (1965)

45% (1966)

48% (1981)

45% (1972)

61% (1968)

36% (1969)

55% (1986)

58% (1964)

53% (1966)

57% (1968)

43% (1965)

59% (1965)

52% (1964)

48% (1972)

60% (1966)

56% (1964)

50% (1968)

56% (1966)