61% (1975)

50% (1975)

56% (1973)

66% (1977)

44% (1973)

50% (1973)

50% (1974)

57% (1974)

70% (1974)

66% (1973)

56% (1975)

47% (1975)

50% (1982)

50% (1971)

0% (1967)

46% (1978)

38% (1977)

55% (1973)

45% (1974)

0% (1975)