| Value | Category | Cases | |
|---|---|---|---|
| 0 | 556 |
87.3%
|
|
| 1 | 3 |
0.5%
|
|
| 2 | 2 |
0.3%
|
|
| 3 | 7 |
1.1%
|
|
| 4 | 2 |
0.3%
|
|
| 5 | 3 |
0.5%
|
|
| 6 | 2 |
0.3%
|
|
| 7 | 5 |
0.8%
|
|
| 10 | 3 |
0.5%
|
|
| 13 | 1 |
0.2%
|
|
| 15 | 2 |
0.3%
|
|
| 16 | 3 |
0.5%
|
|
| 20 | 3 |
0.5%
|
|
| 25 | 2 |
0.3%
|
|
| 30 | 1 |
0.2%
|
|
| 77 | Don't know | 42 |
6.6%
|
| Sysmiss | 1927 |