65% (1965)

55% (1986)

62% (1965)

71% (1957)

48% (1981)

46% (1970)

36% (1969)

62% (1965)

59% (1965)

53% (1966)

55% (1973)

58% (1964)

55% (1966)

55% (1965)

51% (1972)

54% (1966)

57% (1968)

52% (1966)

58% (1967)

56% (1964)