| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Airport | 3 |
3%
|
| 2 | Land border crossing | 91 |
90.1%
|
| 3 | Seaport | 7 |
6.9%
|
| Sysmiss | 373 |