45% (1990)

70% (1982)

74% (1965)

68% (1970)

71% (1962)

69% (1966)

64% (1953)

63% (1978)

62% (1978)

65% (1966)

50% (1956)

71% (1988)

38% (1959)

55% (1976)

68% (1980)

68% (1983)

10% (1991)

0% (1959)

59% (1977)

50% (1963)