80% (1973)

69% (1968)

40% (1962)

76% (1965)

36% (1959)

59% (1972)

31% (1980)

73% (1974)

53% (1967)

30% (1990)

43% (1951)

56% (1964)

65% (1984)

80% (1991)

20% (1973)

65% (1983)

47% (1988)

30% (1990)

0% (1974)

59% (1990)