| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 1570 |
16.8%
|
| 2 | 12 years old | 1559 |
16.7%
|
| 3 | 13 years old | 1557 |
16.7%
|
| 4 | 14 years old | 1764 |
18.9%
|
| 5 | 15 years old | 1492 |
16%
|
| 6 | 16 years old | 856 |
9.2%
|
| 7 | 17 years old or older | 527 |
5.7%
|
| Sysmiss | 314 |