80% (1973)

76% (1965)

69% (1968)

40% (1962)

50% (1958)

59% (1972)

73% (1974)

65% (1984)

30% (1990)

31% (1980)

56% (1964)

36% (1959)

30% (1990)

64% (1982)

61% (1980)

46% (1960)

43% (1951)

75% (1985)

36% (1957)

53% (1967)