| EU | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 |
| UK | 3.5 | 4.5 | 5 | 6 | 7 | 7.5 | 8.5 | 9 | 10 | 11 | 11.5 | 12.5 | 13 | 1 | 1.5 | 2.5 | 3 | 4 | 5 | 6 |
| USA / CA | 4.5 | 5.5 | 6 | 7 | 8 | 8.5 | 9.5 | 10 | 11 | 12 | 12.5 | 13.5 | 14 | 2 | 2.5 | 3.5 | 4 | 5 | 6 | 7 |
| EU | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 |
| UK | 3.5 | 4.5 | 5 | 6 | 7 | 7.5 | 8.5 | 9 | 10 | 11 | 11.5 | 12.5 | 13 | 1 | 1.5 | 2.5 | 3 | 4 | 5 | 6 |
| USA / CA | 4.5 | 5.5 | 6 | 7 | 8 | 8.5 | 9.5 | 10 | 11 | 12 | 12.5 | 13.5 | 14 | 2 | 2.5 | 3.5 | 4 | 5 | 6 | 7 |