48% (1974)

23% (1979)

66% (1974)

20% (1977)

56% (1976)

54% (1974)

68% (1976)

50% (1974)

0% (1975)

45% (1978)

54% (1975)

71% (1975)

53% (1974)

39% (1975)

52% (1975)

30% (1974)

10% (1976)

20% (1974)