| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. No difficulty | 137989 |
87.7%
|
| 2 | 2. Some difficulty | 13184 |
8.4%
|
| 3 | 3. A lot of difficulty | 1908 |
1.2%
|
| 4 | 4. Unable to do | 291 |
0.2%
|
| 5 | 5. Do not know | 80 |
0.1%
|
| 6 | 6. Cannot yet be determined | 2354 |
1.5%
|
| 9 | 9. Unspecified | 1467 |
0.9%
|