| 6 months | 12 months | 24 months | 36 months | 48 months | 60 months | |
| Number children | 375 | 359 | 317 | 300 | 208 | 146 |
| number assessed | 155 | 123 | 149 | 132 | 95 | 63 |
| % | 41.3 | 34.3 | 47.0 | 44.0 | 45.7 | 43.2 |