| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 21380 |
89.7%
|
| 2 | Some difficulty | 2096 |
8.8%
|
| 3 | A lot of difficulty | 267 |
1.1%
|
| 4 | Cannot be understood at all | 100 |
0.4%
|
| 9 | No response | 0 |
0%
|
| Sysmiss | 18565 |