| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Airport | 7 |
5.9%
|
| 2 | Land border crossing | 109 |
92.4%
|
| 3 | Seaport | 2 |
1.7%
|
| Sysmiss | 504 |