41% (1978)

57% (1976)

70% (1975)

43% (1982)

69% (1976)

50% (1978)

66% (1979)

66% (1976)

59% (1978)

55% (1978)

53% (1975)

62% (1978)

75% (1974)

50% (1976)

31% (1976)

51% (1983)

66% (1977)

48% (1979)

60% (1983)

49% (1975)