0 - 10:  5   5
  11 - 20:  2   7
  21 - 30:  7  14
  31 - 40: 17  31
  41 - 50: 23  54
  51 - 60: 13  67
  61 - 70: 19  86
  71 - 80: 18 104
  81 - 90: 13 118
 91 - 100: 12 130
101 - 110:  1 131

average:  59.43