46% (1986)

58% (1976)

53% (1976)

69% (1963)

43% (1973)

70% (1968)

63% (1972)

0% (1967)

61% (1971)

45% (1969)

59% (1973)

58% (1968)

63% (1970)

53% (1971)

48% (1968)

59% (1965)

53% (1973)

52% (1962)

70% (1967)

59% (1970)