| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Airport | 14 |
13.2%
|
| 2 | Land border crossing | 44 |
41.5%
|
| 3 | Seaport | 48 |
45.3%
|
| Sysmiss | 272 |