| Percentiles | ||||||||
---|---|---|---|---|---|---|---|---|---|
 | 3rd | 5th | 10th | 25th | 50th | 75th | 90th | 95th | 97th |
Boys (n = 977) | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   5 years (61-71 months) | 0.40 | 0.41 | 0.42 | 0.44 | 0.46 | 0.49 | 0.52 | 0.54 | 0.56 |
   6 years (72-83 months) | 0.40 | 0.40 | 0.41 | 0.43 | 0.46 | 0.49 | 0.52 | 0.54 | 0.56 |
   7 years (84-95 months) | 0.39 | 0.39 | 0.40 | 0.43 | 0.45 | 0.48 | 0.52 | 0.54 | 0.56 |
   8 years (96-107 months) | 0.38 | 0.39 | 0.40 | 0.42 | 0.45 | 0.48 | 0.52 | 0.54 | 0.56 |
   9 years (108-119 months) | 0.37 | 0.38 | 0.39 | 0.42 | 0.45 | 0.48 | 0.52 | 0.54 | 0.56 |
   10 years (120-131 months) | 0.37 | 0.37 | 0.39 | 0.41 | 0.44 | 0.48 | 0.52 | 0.54 | 0.56 |
   11 years (132-143 months) | 0.36 | 0.37 | 0.38 | 0.41 | 0.44 | 0.48 | 0.52 | 0.54 | 0.56 |
   12 years (144-155 months) | 0.35 | 0.36 | 0.38 | 0.40 | 0.44 | 0.48 | 0.52 | 0.54 | 0.56 |
Girls (n = 883) | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   5 years (61-71 months) | 0.39 | 0.40 | 0.41 | 0.43 | 0.45 | 0.48 | 0.51 | 0.53 | 0.54 |
   6 years (72-83 months) | 0.39 | 0.39 | 0.41 | 0.43 | 0.45 | 0.48 | 0.51 | 0.53 | 0.55 |
   7 years (84-95 months) | 0.38 | 0.39 | 0.40 | 0.43 | 0.45 | 0.48 | 0.52 | 0.54 | 0.56 |
   8 years (96-107 months) | 0.38 | 0.39 | 0.40 | 0.42 | 0.45 | 0.49 | 0.52 | 0.55 | 0.57 |
   9 years (108-119 months) | 0.38 | 0.38 | 0.40 | 0.42 | 0.45 | 0.49 | 0.53 | 0.55 | 0.58 |
   10 years (120-131 months) | 0.37 | 0.38 | 0.39 | 0.41 | 0.44 | 0.48 | 0.53 | 0.56 | 0.58 |
   11 years (132-143 months) | 0.36 | 0.37 | 0.38 | 0.41 | 0.44 | 0.48 | 0.53 | 0.56 | 0.59 |
   12 years (144-155 months) | 0.35 | 0.36 | 0.37 | 0.40 | 0.43 | 0.47 | 0.52 | 0.56 | 0.60 |