| Value | Category | Cases | |
|---|---|---|---|
| 1 | 6 years old or younger | 58649 |
32.3%
|
| 2 | 7-9 years old | 80393 |
44.3%
|
| 3 | 10-12 years old | 35188 |
19.4%
|
| 4 | 13 years old or older | 6628 |
3.7%
|
| 5 | Never | 450 |
0.2%
|
| 7 | N/A | 84505 | |
| 8 | Invalid | 347 | |
| 9 | Missing | 5163 |