| Value | Category | Cases | |
|---|---|---|---|
| 1 | 6 |
0.9%
|
|
| 2 | 12 |
1.8%
|
|
| 3 | 14 |
2.1%
|
|
| 4 | 8 |
1.2%
|
|
| 5 | 17 |
2.5%
|
|
| 6 | 35 |
5.2%
|
|
| 7 | 52 |
7.7%
|
|
| 99 | Don't know | 529 |
78.6%
|
| Sysmiss | 1927 |