| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty at all | 129111 |
88.8%
|
| 2 | Yes, some difficulty | 2154 |
1.5%
|
| 3 | Yes, a lot of difficulty | 810 |
0.6%
|
| 4 | Cannot do at all | 464 |
0.3%
|
| 8 | Do not know | 12835 |
8.8%
|
| 9 | Unspecified | 11 |
0%
|