| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 6 |
0.6%
|
| 2 | 12 years old | 105 |
10.3%
|
| 3 | 13 years old | 231 |
22.8%
|
| 4 | 14 years old | 238 |
23.4%
|
| 5 | 15 years old | 195 |
19.2%
|
| 6 | 16 years old or older | 240 |
23.6%
|
| Sysmiss | 5 |