| Value | Category | Cases | |
|---|---|---|---|
| 1 | FIRST TIME | 35 | 
                                                                 
                                    
                                    14.8%
                                 
                                                             | 
                                                        
                    
| 2 | RETURNEE | 202 | 
                                                                 
                                    
                                    85.2%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1996 |