| Value | Category | Cases | |
|---|---|---|---|
| 0 | none | 796 |
11.8%
|
| 1 | primary inc (< 7) | 1372 |
20.3%
|
| 2 | primary complete (7) | 800 |
11.8%
|
| 3 | secy incomplete (8-11) | 2799 |
41.4%
|
| 4 | secy complete (12)/higher | 988 |
14.6%
|