| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Airport | 5 |
4.8%
|
| 2 | Land border crossing | 69 |
65.7%
|
| 3 | Seaport | 31 |
29.5%
|
| Sysmiss | 624 |