
| Upper bound of category | Frequency | Frequency % | Cummulative frequency % |
| 16.7 | 1 | 0.0 | 0.0 |
| 19.4 | 0 | 0.0 | 0.0 |
| 22.2 | 1 | 0.0 | 0.0 |
| 24.9 | 0 | 0.0 | 0.0 |
| 27.6 | 10 | 0.0 | 0.0 |
| 30.3 | 1 | 0.0 | 0.0 |
| 33.0 | 17 | 0.0 | 0.1 |
| 35.8 | 3332 | 9.6 | 9.7 |
| 38.5 | 11754 | 34.0 | 43.7 |
| 41.2 | 6638 | 19.2 | 62.9 |
| 43.9 | 3144 | 9.1 | 72.0 |
| 46.6 | 2347 | 6.8 | 78.8 |
| 49.4 | 998 | 2.9 | 81.7 |
| 52.1 | 717 | 2.1 | 83.8 |
| 54.8 | 500 | 1.4 | 85.2 |
| 57.5 | 405 | 1.2 | 86.4 |
| 60.2 | 394 | 1.1 | 87.6 |
| 63.0 | 332 | 1.0 | 88.5 |
| 65.7 | 296 | 0.9 | 89.4 |
| 68.4 | 264 | 0.8 | 90.1 |
| 71.1 | 241 | 0.7 | 90.8 |
| 73.8 | 212 | 0.6 | 91.4 |
| 76.6 | 155 | 0.4 | 91.9 |
| 79.3 | 156 | 0.5 | 92.3 |
| 82.0 | 156 | 0.5 | 92.8 |
| 84.7 | 105 | 0.3 | 93.1 |
| 87.4 | 103 | 0.3 | 93.4 |
| 90.2 | 99 | 0.3 | 93.7 |
| 92.9 | 111 | 0.3 | 94.0 |
| 95.6 | 117 | 0.3 | 94.3 |
| 98.3 | 94 | 0.3 | 94.6 |
| 101.0 | 114 | 0.3 | 94.9 |
| 103.8 | 97 | 0.3 | 95.2 |
| 106.5 | 121 | 0.4 | 95.6 |
| 109.2 | 113 | 0.3 | 95.9 |
| 111.9 | 116 | 0.3 | 96.2 |
| 114.6 | 112 | 0.3 | 96.6 |
| 117.4 | 112 | 0.3 | 96.9 |
| 120.1 | 118 | 0.3 | 97.2 |
| 122.8 | 119 | 0.3 | 97.6 |
| 125.5 | 147 | 0.4 | 98.0 |
| 128.2 | 123 | 0.4 | 98.4 |
| 131.0 | 131 | 0.4 | 98.7 |
| 133.7 | 106 | 0.3 | 99.0 |
| 136.4 | 89 | 0.3 | 99.3 |
| 139.1 | 59 | 0.2 | 99.5 |
| 141.8 | 59 | 0.2 | 99.6 |
| 144.6 | 59 | 0.2 | 99.8 |
| 147.3 | 34 | 0.1 | 99.9 |
| 150.0 | 31 | 0.1 | 100.0 |