| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 155 |
10%
|
| 2 | 12 years old | 75 |
4.8%
|
| 3 | 13 years old | 130 |
8.4%
|
| 4 | 14 years old | 255 |
16.5%
|
| 5 | 15 years old | 520 |
33.6%
|
| 6 | 16 years old | 346 |
22.4%
|
| 7 | 17 years old or older | 66 |
4.3%
|
| Sysmiss | 73 |