| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 5 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 1996 | 1360 | 
                                                                 
                                    
                                    99.6%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 7 |