| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 3 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 2 | 2 yr or primary | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 4 | 4 yr of primary | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 6 | 6 yr of primary | 4 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 7 | 1 yr of secondary | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 8 | 2 yr of secondary | 2 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 10 | 4 yr of secondary | 2 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 12 | 6 yr of secondary | 275 | 
                                                                 
                                    
                                    19.6%
                                 
                                                             | 
                                                        
                    
| 13 | College | 1064 | 
                                                                 
                                    
                                    76%
                                 
                                                             | 
                                                        
                    
| 96 | Other | 40 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    
| d | DK | 4 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| r | RF | 3 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             |