49% (1973)

46% (1962)

67% (1962)

51% (1967)

55% (1973)

70% (1960)

64% (1960)

41% (1972)

75% (1962)

52% (1966)

72% (1961)

58% (1968)

0% (1964)

45% (1997)

65% (1960)

54% (1974)

63% (1973)

50% (1976)

69% (1975)

70% (1959)