65% (1982)

56% (1961)

54% (1965)

47% (1974)

50% (1964)

53% (1969)

58% (1962)

56% (1965)

47% (1960)

62% (1959)

60% (1960)

50% (1982)

60% (1958)

58% (1960)

33% (1985)

10% (1974)

40% (1977)

73% (1968)

10% (1966)

35% (1975)