| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1%
|
| 1 | Airport | 4 |
4%
|
| 2 | Land border crossing | 85 |
84.2%
|
| 3 | Seaport or waterway | 11 |
10.9%
|
| Sysmiss | 206 |