| Average | |||
|---|---|---|---|
| Birth | 3.3 | 2.6-4.2 | |
| Month | 1 | 4.5 | 3.6-5.5 |
| Month | 2 | 5.6 | 4.5-6.8 |
| Month | 3 | 6.4 | 5.2-7.7 |
| Month | 4 | 7.0 | 5.8-8.4 |
| Month | 5 | 7.5 | 6.2-9.0 |
| Month | 6 | 7.9 | 6.6-9.5 |
| Month | 7-8 | 8.6 | 6.9-10.6 |
| Month | 10-14 | 9.6 | 7.7-12.1 |
| Month | 15-19 | 10.7 | 8.6-13.4 |
| Month | 20-24 | 11.8 | 9.4-14.7 |
| Year | 2-2.5 | 12.9 | 10.6-16.2 |
| Year | 2.5-3.5 | 14.3 | 11.4-18.1 |
| Year | 3.5-4.5 | 15.8 | 12.6-20.5 |
| Year | 4.5-5 | 17.4 | 13.9-22.9 |
| Year | 5 | 19.2 | 15.1-26.1 |
| Year | 6 | 21.4 | 16.6-29.6 |
| Year | 7 | 23.6 | 18.3-33.4 |
| Year | 8 | 26.0 | 20.0-37.7 |
| Year | 9 | 28.7 | 21.8-42.7 |
| Year | 10 | 31.8 | 23.8-48.2 |
| Year | 11 | 35.4 | 26.0-54.2 |
| Year | 12 | 39.5 | 28.5-60.4 |
| Year | 13 | 44.1 | 31.4-66.7 |
| Year | 14 | 49.0 | 34.9-72.7 |
| Average | |||
|---|---|---|---|
| Birth | 3.2 | 2.5-4.0 | |
| Month | 1 | 4.2 | 3.3-5.2 |
| Month | 2 | 5.1 | 4.1-6.3 |
| Month | 3 | 5.8 | 4.7-7.2 |
| Month | 4 | 6.4 | 5.2-7.9 |
| Month | 5 | 6.9 | 5.6-8.4 |
| Month | 6 | 7.3 | 6.0-8.9 |
| Month | 7-8 | 7.9 | 6.3-10.1 |
| Month | 10-14 | 8.9 | 7.0-11.5 |
| Month | 15-19 | 10.0 | 7.9-12.9 |
| Month | 20-24 | 11.1 | 8.7-14.2 |
| Year | 2-2.5 | 12.3 | 10.2-15.8 |
| Year | 2.5-3.5 | 13.8 | 11.0-18.1 |
| Year | 3.5-4.5 | 15.4 | 12.1-20.7 |
| Year | 4.5-5 | 16.9 | 13.3-23.2 |
| Year | 5 | 18.8 | 14.6-26.5 |
| Year | 6 | 20.9 | 16.1-30.0 |
| Year | 7 | 23.3 | 17.8-34.1 |
| Year | 8 | 26.0 | 19.5-38.9 |
| Year | 9 | 29.1 | 21.4-44.4 |
| Year | 10 | 32.7 | 23.5-50.4 |
| Year | 11 | 36.7 | 26.1-56.7 |
| Year | 12 | 40.7 | 28.9-62.7 |
| Year | 13 | 44.7 | 32.0-68.0 |
| Year | 14 | 48.1 | 35.2-72.4 |