58% (1977)

52% (1964)

64% (1965)

57% (1968)

64% (1961)

30% (1982)

58% (1964)

56% (1975)

0% (1949)

54% (1971)

65% (1956)

33% (1990)

58% (1967)

47% (1970)

90% (1954)

57% (1973)

14% (1981)

35% (1966)

57% (1973)

49% (1968)