| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 4 |
0.2%
|
| 2 | 12 years old | 207 |
10.1%
|
| 3 | 13 years old | 462 |
22.6%
|
| 4 | 14 years old | 412 |
20.1%
|
| 5 | 15 years old | 272 |
13.3%
|
| 6 | 16 years old | 280 |
13.7%
|
| 7 | 17 years old | 265 |
12.9%
|
| 8 | 18 years old or older | 146 |
7.1%
|
| Sysmiss | 1 |