| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 138 |
4.1%
|
| 2 | 12 years old | 90 |
2.7%
|
| 3 | 13 years old | 532 |
15.7%
|
| 4 | 14 years old | 925 |
27.3%
|
| 5 | 15 years old | 1059 |
31.2%
|
| 6 | 16 years old | 520 |
15.3%
|
| 7 | 17 years old or older | 128 |
3.8%
|
| Sysmiss | 140 |