| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1990 | 
                                    
                                    97%
                                 | |
| 2 | 17 | 
                                    
                                    0.8%
                                 | |
| 8 | 45 | 
                                    
                                    2.2%
                                 | |
| Sysmiss | 70 |