| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not purchased | 1066 |
93.2%
|
| 1 | 69 |
6%
|
|
| 2 | 6 |
0.5%
|
|
| 4 | 1 |
0.1%
|
|
| 9999 | Missing | 2 |
0.2%
|
| Sysmiss | 1136 |