| Value | Category | Cases | |
|---|---|---|---|
| 15 | 2 |
11.1%
|
|
| 16 | 2 |
11.1%
|
|
| 17 | 5 |
27.8%
|
|
| 18 | 5 |
27.8%
|
|
| 19 | 1 |
5.6%
|
|
| 20 | 2 |
11.1%
|
|
| 21 | 1 |
5.6%
|
|
| 98 | 98. Refused | 0 |
0%
|
| 99 | 99. don't know | 0 |
0%
|
| Sysmiss | 81 |