| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 923 | 
                                    
                                    69.9%
                                 | 
| 2 | 1 time | 143 | 
                                    
                                    10.8%
                                 | 
| 3 | 2 or 3 times | 122 | 
                                    
                                    9.2%
                                 | 
| 4 | 4 or 5 times | 50 | 
                                    
                                    3.8%
                                 | 
| 5 | 6 or 7 times | 17 | 
                                    
                                    1.3%
                                 | 
| 6 | 8 or 9 times | 9 | 
                                    
                                    0.7%
                                 | 
| 7 | 10 or 11 times | 10 | 
                                    
                                    0.8%
                                 | 
| 8 | 12 or more times | 47 | 
                                    
                                    3.6%
                                 | 
| Sysmiss | 36 |