| Value | Category | Cases | |
|---|---|---|---|
| 17 | 1 |
2.5%
|
|
| 18 | 3 |
7.5%
|
|
| 19 | 4 |
10%
|
|
| 20 | 7 |
17.5%
|
|
| 21 | 2 |
5%
|
|
| 22 | 3 |
7.5%
|
|
| 23 | 3 |
7.5%
|
|
| 24 | 5 |
12.5%
|
|
| 25 | 3 |
7.5%
|
|
| 27 | 3 |
7.5%
|
|
| 29 | 1 |
2.5%
|
|
| 30 | 1 |
2.5%
|
|
| 32 | 1 |
2.5%
|
|
| 98 | 98. Refused | 2 |
5%
|
| 99 | 99. Don't know | 1 |
2.5%
|
| Sysmiss | 194 |