2 3 4-5 4 4.5 5 5.5 5/6 5-6 6 6.5 6-7 7 7.5 7/8 7-8 8 8.5 8-9 9 9.5 9/10 9-10 10 10.5 11 11/12 11-12 11-13 12 13/14 13-14 14 14-16 16 80 86-92 98-104 104-110 104 110-116 116-122 122-128 128-134 134-140 140 140-146 146-152 4-7 5-7 8-11 12-15 2.5 8/10 4-6 7-9 8-10 10-12 8/9 6/7 4/6 1-2 2-3 8/11 4/7 12/15 1.5 5/7 14/16 2/3 1/2 6/8 4/5 years 0/2 2/4