47% (1987)

55% (1970)

58% (1964)

64% (1961)

65% (1956)

56% (1975)

58% (1966)

49% (1968)

57% (1973)

58% (1967)

55% (1961)

55% (1971)

0% (1951)

35% (1966)

46% (1971)

53% (1982)

90% (1954)

70% (1934)

0% (1949)

60% (1952)