| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. NONE | 13160 |
53.1%
|
| 1 | 1. PRIMARY | 5947 |
24%
|
| 2 | 2. SECONDARY | 3606 |
14.6%
|
| 3 | 3. TERTIARY | 2054 |
8.3%
|
| Sysmiss | 4926 |