| Value | Category | Cases | |
|---|---|---|---|
| 0 | 4 |
3.3%
|
|
| 1 | 7 |
5.8%
|
|
| 2 | 11 |
9.1%
|
|
| 3 | 30 |
24.8%
|
|
| 4 | 9 |
7.4%
|
|
| 5 | 24 |
19.8%
|
|
| 6 | 6 |
5%
|
|
| 7 | 4 |
3.3%
|
|
| 8 | 3 |
2.5%
|
|
| 10 | 15 |
12.4%
|
|
| 13 | 2 |
1.7%
|
|
| 15 | 2 |
1.7%
|
|
| 20 | 2 |
1.7%
|
|
| 21 | 1 |
0.8%
|
|
| 77 | Don't know | 1 |
0.8%
|
| Sysmiss | 2443 |