Instructions:
Study the following table and answer the questions given below

1981 : (4/30)*100 = 13 1/3%
1982 : (8/45)*100 = 17 7/9%
1983 : (8.5/50)*100 = 17%
1984 : (10/40)*100 = 25%
1985 : (11/42)*100 = 26.19%
1986 : (13/45)*100 = 28 8/9%
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