Average height and weight:
| Age in weeks | Height (cm) | Weight (kg) | ||
| 9,5 | 43,2 | 13,5 | ||
| 11 | 45,7 | 15,8 | ||
| 12 | 48,2 | 18,0 | ||
| 13 | 50,8 | 19,9 | ||
| 14 | 53,3 | 21,0 | ||
| 15 | 54,6 | 23,0 | ||
| 16 | 58,7 | 25,0 | ||
| 17 | 59,7 | 28,0 | ||
| 18 | 62,2 | 31,0 | ||
| 19 | 63,6 | 33,0 | ||
| 20 | 64,7 | 35,0 | ||
| 21 | 66,0 | 37,5 | ||
| 22 | 68,5 | 39,0 | ||
| 23 | 69,8 | 40,5 | ||
| 24 | 72,4 | 42,0 | ||
| 25 | 73,0 | 44,0 | ||
| 26 | 73,6 | 46,0 | ||
| 27 | 74,9 | 49,0 | ||
| 7 months | 77,4 | 55,0 | ||
| 8 months | 81,2 | 59,0 | ||
| 9 months | 82,5 | 60,5 | ||
| 10 months | 83,8 | 62,0 | ||
| 11 months | 85,0 | 64,5 | ||
| 12 months | 85,7 | 65,5 | ||
| 18 months | 86,0 | 68,0 | ||
| 2,5 year | 87,5 | 73,0 |