| Value | Category | Cases | |
|---|---|---|---|
| 2 | 1990 | 
                                    
                                    33.3%
                                 | |
| 3 | 1990 | 
                                    
                                    33.3%
                                 | |
| 4 | 1990 | 
                                    
                                    33.3%
                                 |