| Value | Category | Cases | |
|---|---|---|---|
| -2 | don't know | 1 |
0.6%
|
| -1 | refuse | 0 |
0%
|
| 1 | Abundant | 9 |
5.3%
|
| 2 | Sufficient | 109 |
64.5%
|
| 3 | Barely sufficient | 24 |
14.2%
|
| 4 | Insufficient | 23 |
13.6%
|
| 5 | Not sufficient at all | 3 |
1.8%
|
| Sysmiss | 880 |