| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 62 |
1.4%
|
| 2 | 12 years old | 1033 |
22.8%
|
| 3 | 13 years old | 1362 |
30.1%
|
| 4 | 14 years old | 1467 |
32.4%
|
| 5 | 15 years old | 581 |
12.8%
|
| 6 | 16 years old | 15 |
0.3%
|
| 7 | 17 years old or older | 4 |
0.1%
|
| Sysmiss | 19 |