| Value | Category | Cases | |
|---|---|---|---|
| 0 | 6 | 
                                    
                                    0.1%
                                 | |
| 1 | Daily | 506 | 
                                    
                                    6%
                                 | 
| 2 | Weekly | 361 | 
                                    
                                    4.3%
                                 | 
| 3 | Two weeks | 80 | 
                                    
                                    0.9%
                                 | 
| 4 | Monthly | 1634 | 
                                    
                                    19.2%
                                 | 
| 5 | Quarterly | 486 | 
                                    
                                    5.7%
                                 | 
| 6 | Yearly | 5416 | 
                                    
                                    63.8%
                                 | 
| Sysmiss | 14533 |