60% (1968)

56% (1972)

62% (1965)

56% (1986)

48% (1970)

64% (1965)

58% (1964)

59% (1965)

48% (1981)

54% (1966)

45% (1965)

77% (1966)

70% (1965)

45% (1966)

50% (1968)

55% (1966)

36% (1969)

56% (1964)

53% (1966)

47% (1967)