| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 69 |
5%
|
| 2 | 12 years old | 315 |
22.7%
|
| 3 | 13 years old | 398 |
28.6%
|
| 4 | 14 years old | 382 |
27.5%
|
| 5 | 15 years old | 176 |
12.7%
|
| 6 | 16 years old | 40 |
2.9%
|
| 7 | 17 years old or older | 10 |
0.7%
|
| Sysmiss | 25 |