| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 83 |
4%
|
| 2 | 12 years old | 221 |
10.6%
|
| 3 | 13 years old | 365 |
17.5%
|
| 4 | 14 years old | 445 |
21.3%
|
| 5 | 15 years old | 411 |
19.7%
|
| 6 | 16 years old | 352 |
16.8%
|
| 7 | 17 years old or older | 213 |
10.2%
|
| Sysmiss | 35 |