| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.6%
|
| 0 | 3 |
1.7%
|
|
| 1 | Airport | 12 |
6.7%
|
| 2 | Land border crossing | 65 |
36.5%
|
| 3 | Seaport | 97 |
54.5%
|
| Sysmiss | 551 |