20 - 13.3 21 - 13.7 22 - 14.2 23 - 15.0 24 - 15.5 25 - 16.3 26 - 17.0 27 - 17.5 28 - 18.5 29 - 19.0 30 - 20.0 31 - 20.4 32 - 21.0 33 - 21.8 34 - 22.3 35 - 23.0 .