| Value | Category | Cases | |
|---|---|---|---|
| 1 | 13 |
0.7%
|
|
| 2 | 17 |
0.9%
|
|
| 3 | 11 |
0.6%
|
|
| 4 | 422 |
22.4%
|
|
| 5 | 8 |
0.4%
|
|
| 6 | 73 |
3.9%
|
|
| 7 | 21 |
1.1%
|
|
| 8 | 533 |
28.3%
|
|
| 9 | 293 |
15.6%
|
|
| 10 | 154 |
8.2%
|
|
| 12 | 12 trips or more | 339 |
18%
|
| Sysmiss | 22 |