23 32 44 53 63 71 83 103 124 131 143 161 1-21 3-46 4-52 5-67 6-71 7-87 8-91 9-109 10-111 11-128 12-131 13-147 15-161 UK 1.52 UK 31 UK 3.51 UK 42 UK 4.54 UK 53 UK 5.51 UK 2.51 UK 24 3 infant2 4 infant2 4.5 infant1 5 infant2 5.5 infant1 6 infant1 7 infant2 7.5 infant2 8.5 infant1 9 infant1 9.5 infant1 10 child6 10.5 child1 11 child4 11.5 child4 12 child3 12.5 child3 13 child2 13.5 child1 UK 13 0-3m1 3m1 3-6m2 6m1 6-9m2 9M1 9-12M1 12-18m1 18m1 18-24m1 24m1