| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1731 | 
                                    
                                    68.7%
                                 | 
| 2 | 1 time | 410 | 
                                    
                                    16.3%
                                 | 
| 3 | 2 or 3 times | 204 | 
                                    
                                    8.1%
                                 | 
| 4 | 4 or 5 times | 62 | 
                                    
                                    2.5%
                                 | 
| 5 | 6 or 7 times | 32 | 
                                    
                                    1.3%
                                 | 
| 6 | 8 or 9 times | 21 | 
                                    
                                    0.8%
                                 | 
| 7 | 10 or 11 times | 15 | 
                                    
                                    0.6%
                                 | 
| 8 | 12 or more times | 43 | 
                                    
                                    1.7%
                                 | 
| Sysmiss | 61 |