56% (1965)

64% (1982)

56% (1967)

53% (1971)

50% (1964)

56% (1965)

56% (1961)

62% (1968)

58% (1960)

73% (1968)

50% (1957)

0% (1976)

50% (1969)

45% (1968)

53% (1969)

10% (1974)

60% (1960)

40% (1977)

64% (1959)

57% (1974)