23 1/2 31 1/2 35 1/2 35.5 36 36 1/2 36.5 37 1/2 37.5 38 38 1/2 38.5 39 40 40 1/2 40.5 41 42 42 1/2 42.5 43 44 44 1/2 44.5 45 45 1/2 45.5 46 47 47 1/2 47.5 48 48 1/2 48.5 49 49 1/2 49.5 50.5 51 52