| Value | Category | Cases | |
|---|---|---|---|
| 1 | LESS THAN 12 MONTHS AGO | 364 | 
                                    
                                    16.9%
                                 | 
| 2 | 12-23 MONTHS AGO | 205 | 
                                    
                                    9.5%
                                 | 
| 3 | 2 OR MORE YEARS AGO | 320 | 
                                    
                                    14.9%
                                 | 
| Sysmiss | 1264 | 
                                    
                                    58.7%
                                 |