80% (1986)

75% (1986)

67% (1985)

72% (1982)

73% (1986)

68% (1984)

62% (1985)

67% (1985)

67% (1985)

71% (1985)

70% (1985)

60% (1985)

68% (1982)

61% (1981)

55% (1985)

55% (1982)

58% (1985)

64% (1982)

71% (1981)