| Value | Category | Cases | |
|---|---|---|---|
| 1 | No difficulty | 2670449 |
98.9%
|
| 2 | Yes, some difficulty | 21086 |
0.8%
|
| 3 | Yes, a lot of difficulty | 5431 |
0.2%
|
| 4 | Cannot communicate at all | 1832 |
0.1%
|
| Sysmiss | 384774 |