| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. No, no difficulty | 112651 |
96.8%
|
| 2 | 2. Yes, some | 2881 |
2.5%
|
| 3 | 3. Yes, a lot | 623 |
0.5%
|
| 4 | 4. Cannot see | 165 |
0.1%
|