80% (1986)

75% (1986)

67% (1985)

72% (1986)

72% (1982)

68% (1984)

63% (1985)

66% (1985)

72% (1985)

67% (1985)

69% (1982)

70% (1985)

54% (1985)

55% (1982)

58% (1985)

60% (1985)

60% (1981)

64% (1982)

71% (1981)