| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don?t know | 0 | 
                                    
                                    0%
                                 | 
| 0 | 99 | 
                                    
                                    77.3%
                                 | |
| 1 | 19 | 
                                    
                                    14.8%
                                 | |
| 2 | 3 | 
                                    
                                    2.3%
                                 | |
| 3 | 4 | 
                                    
                                    3.1%
                                 | |
| 4 | 1 | 
                                    
                                    0.8%
                                 | |
| 8 | 1 | 
                                    
                                    0.8%
                                 | |
| 10 | 1 | 
                                    
                                    0.8%
                                 |