| Value | Category | Cases | |
|---|---|---|---|
| 0 | 311 |
71.2%
|
|
| 1 | 20 |
4.6%
|
|
| 2 | 14 |
3.2%
|
|
| 3 | 14 |
3.2%
|
|
| 4 | 5 |
1.1%
|
|
| 5 | 12 |
2.7%
|
|
| 6 | 24 |
5.5%
|
|
| 7 | 2 |
0.5%
|
|
| 8 | 6 |
1.4%
|
|
| 9 | 2 |
0.5%
|
|
| 10 | 10 |
2.3%
|
|
| 12 | 9 |
2.1%
|
|
| 17 | 2 |
0.5%
|
|
| 21 | 1 |
0.2%
|
|
| 24 | 1 |
0.2%
|
|
| 25 | 1 |
0.2%
|
|
| 30 | 2 |
0.5%
|
|
| 50 | 1 |
0.2%
|
|
| 77 | don't know | 0 |
0%
|
| Sysmiss | 476 |