| Value | Category | Cases | |
|---|---|---|---|
| 0 | 408 |
68.1%
|
|
| 1 | 71 |
11.9%
|
|
| 2 | 42 |
7%
|
|
| 3 | 21 |
3.5%
|
|
| 4 | 16 |
2.7%
|
|
| 5 | 6 |
1%
|
|
| 6 | 7 |
1.2%
|
|
| 7 | 2 |
0.3%
|
|
| 8 | 2 |
0.3%
|
|
| 10 | 8 |
1.3%
|
|
| 12 | 2 |
0.3%
|
|
| 15 | 3 |
0.5%
|
|
| 18 | 1 |
0.2%
|
|
| 24 | 3 |
0.5%
|
|
| 30 | 1 |
0.2%
|
|
| 77 | Don't know | 6 |
1%
|
| Sysmiss | 4143 |