| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 813 | 
                                    
                                    60.3%
                                 | 
| 2 | 1 time | 230 | 
                                    
                                    17%
                                 | 
| 3 | 2 or 3 times | 165 | 
                                    
                                    12.2%
                                 | 
| 4 | 4 or 5 times | 56 | 
                                    
                                    4.2%
                                 | 
| 5 | 6 or 7 times | 24 | 
                                    
                                    1.8%
                                 | 
| 6 | 8 or 9 times | 17 | 
                                    
                                    1.3%
                                 | 
| 7 | 10 or 11 times | 3 | 
                                    
                                    0.2%
                                 | 
| 8 | 12 or more times | 41 | 
                                    
                                    3%
                                 | 
| Sysmiss | 8 |