| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 14 |
1.2%
|
| 2 | 12 years old | 170 |
14.4%
|
| 3 | 13 years old | 300 |
25.5%
|
| 4 | 14 years old | 318 |
27%
|
| 5 | 15 years old | 218 |
18.5%
|
| 6 | 16 years old | 130 |
11%
|
| 7 | 17 years old or older | 28 |
2.4%
|
| Sysmiss | 50 |