| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0.7%
|
|
| 1 | 17 |
12.1%
|
|
| 2 | 27 |
19.3%
|
|
| 3 | 23 |
16.4%
|
|
| 4 | 8 |
5.7%
|
|
| 5 | 10 |
7.1%
|
|
| 6 | 6 |
4.3%
|
|
| 7 | 5 |
3.6%
|
|
| 8 | 2 |
1.4%
|
|
| 10 | 3 |
2.1%
|
|
| 15 | 1 |
0.7%
|
|
| 20 | 1 |
0.7%
|
|
| 24 | 2 |
1.4%
|
|
| 30 | 3 |
2.1%
|
|
| 77 | Don't know | 31 |
22.1%
|
| Sysmiss | 1908 |