| Value | Category | Cases | |
|---|---|---|---|
| 1 | six months | 702 | 
                                    
                                    21.2%
                                 | 
| 2 | 12 months | 786 | 
                                    
                                    23.8%
                                 | 
| 3 | 24 months | 822 | 
                                    
                                    24.8%
                                 | 
| 4 | I won't accept | 999 | 
                                    
                                    30.2%
                                 |