65% (1982)

56% (1961)

56% (1965)

73% (1968)

53% (1969)

70% (1960)

64% (1959)

56% (1967)

45% (1968)

58% (1960)

53% (1971)

47% (1974)

56% (1965)

23% (1967)

60% (1960)

0% (1966)

50% (1957)

50% (1964)

10% (1966)

33% (1985)