| Value | Category | Cases | |
|---|---|---|---|
| 0 | Pre-primay | 37 | 
                                
                                19.8%
                             | 
| 1 | Primary | 148 | 
                                
                                79.1%
                             | 
| 2 | Unclassified | 2 | 
                                
                                1.1%
                             | 
| 5 | Missing | 0 | 
                                
                                0%
                             | 
| 9 | NA | 0 | 
                                
                                0%
                             |