55% (1986)

49% (1972)

64% (1965)

62% (1965)

56% (1964)

57% (1968)

46% (1970)

77% (1966)

45% (1965)

52% (1966)

60% (1966)

20% (1956)

48% (1981)

60% (1965)

70% (1965)

47% (1967)

0% (1970)

62% (1965)

50% (1967)

37% (1969)