68% (1979)

57% (1957)

54% (1985)

40% (1989)

74% (1962)

52% (1982)

44% (1959)

60% (1976)

0% (1961)

56% (1960)

0% (1980)

32% (1960)

50% (1974)

68% (1983)

76% (1971)

68% (1966)

50% (1991)

40% (1972)

59% (1953)

62% (1983)