Considering the frequency distribution. What should be the minimum grade of the student in order for him/her to have a grade of ( higher than 70% of the student population , higher than 85% of the student population , higher than 95% of the student population )

The following scores represent the final examination grades for an elementary statistics course (treated as population): 23 60 79 32 57 74 52 70 82 36 80 77 81 95 41 65 92 85 55 76 52 10 64 75 78 25 80 98 81 67 41 71 83 54 64 72 88 62 74 43 60 178 89 76 84 48 84 90 15 79 34 67 17 82 69 74 63 80 85 61