| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 times | 1261 | 
                                    
                                    96.5%
                                 | 
| 2 | 1 or 2 times | 15 | 
                                    
                                    1.1%
                                 | 
| 3 | 3 to 9 times | 14 | 
                                    
                                    1.1%
                                 | 
| 4 | 10 to 19 times | 10 | 
                                    
                                    0.8%
                                 | 
| 5 | 20 or more times | 7 | 
                                    
                                    0.5%
                                 | 
| Sysmiss | 50 |