| Value | Category | Cases | |
|---|---|---|---|
| 0 | no card | 469 |
7.5%
|
| 1 | yes, seen | 4215 |
67.5%
|
| 2 | yes, not seen | 1366 |
21.9%
|
| 3 | no longer has card | 196 |
3.1%
|
| 9 | 1 |
0%
|
|
| 11 | .Z | 12507 |