50% (1977)

45% (1978)

61% (1971)

62% (1951)

63% (1972)

51% (1985)

80% (1951)

54% (1966)

74% (1969)

50% (1974)

0% (1971)

62% (1972)

50% (1973)

59% (1980)

37% (1972)

20% (1973)

52% (1981)