| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
4.1%
|
| 1 | Airport | 4 |
5.4%
|
| 2 | Land border crossing | 51 |
68.9%
|
| 3 | Seaport | 16 |
21.6%
|
| Sysmiss | 518 |