70% (1968)

46% (1986)

53% (1976)

44% (1973)

62% (1971)

53% (1973)

48% (1966)

48% (1968)

52% (1968)

59% (1973)

69% (1963)

0% (1972)

53% (1971)

47% (1972)

53% (1970)

52% (1962)

0% (1967)

34% (1966)

45% (1969)

61% (1970)