| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 |
12.3%
|
|
| 1 | 6 |
5.7%
|
|
| 2 | 9 |
8.5%
|
|
| 3 | 16 |
15.1%
|
|
| 4 | 5 |
4.7%
|
|
| 5 | 15 |
14.2%
|
|
| 6 | 10 |
9.4%
|
|
| 7 | 3 |
2.8%
|
|
| 8 | 2 |
1.9%
|
|
| 9 | 2 |
1.9%
|
|
| 10 | 15 |
14.2%
|
|
| 12 | 1 |
0.9%
|
|
| 15 | 3 |
2.8%
|
|
| 20 | 4 |
3.8%
|
|
| 30 | 1 |
0.9%
|
|
| 77 | Don't know | 1 |
0.9%
|
| Sysmiss | 2482 |