| Value | Category | Cases | |
|---|---|---|---|
| 1 | Restriction related to document | 210 |
4.2%
|
| 2 | Any other reason | 237 |
4.7%
|
| 3 | Volunteered response: I did not need to travel | 2346 |
46.9%
|
| 99 | Refuse to answer | 35 |
0.7%
|
| Missing value | 2179 |
43.5%
|