question: What was the percentage increase of the high school completion rate for African Americans between 1975 and 1990 ?
answer: 12 %
turker_answer: The percentage increase of the high school completion rate for African Americans between 1975 and 1990 was 12 % .
rule-based: The percentage increase of the high school completion rate for African Americans between 1975 and 1990 was 12 % .