| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 174 |
8.3%
|
| 2 | 12 years old | 273 |
13%
|
| 3 | 13 years old | 489 |
23.2%
|
| 4 | 14 years old | 551 |
26.2%
|
| 5 | 15 years old | 336 |
16%
|
| 6 | 16 years old | 210 |
10%
|
| 7 | 17 years old or older | 72 |
3.4%
|
| Sysmiss | 12 |