| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 90 |
1.8%
|
| 2 | 12 years old | 131 |
2.7%
|
| 3 | 13 years old | 662 |
13.5%
|
| 4 | 14 years old | 1043 |
21.3%
|
| 5 | 15 years old | 1312 |
26.8%
|
| 6 | 16 years old | 1081 |
22.1%
|
| 7 | 17 years old or older | 580 |
11.8%
|
| Sysmiss | 52 |