| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 12494 |
16.8%
|
| 2 | Some difficulty | 2403 |
3.2%
|
| 3 | A lot of difficulty | 1993 |
2.7%
|
| 4 | Unable to do | 4683 |
6.3%
|
| 5 | Do not know | 58 |
0.1%
|
| 8 | Not applicable | 52562 |
70.6%
|
| 9 | Unspecified | 256 |
0.3%
|