57% (1973)

45% (1970)

70% (1965)

0% (1963)

60% (1959)

57% (1982)

61% (1962)

50% (1990)

64% (1966)

63% (1980)

57% (1988)

60% (1972)

57% (1967)

65% (1990)

58% (1968)

76% (1951)

63% (1961)

57% (1953)

30% (1987)

65% (1982)