| Value | Category | Cases | |
|---|---|---|---|
| 1 | Stop working after year 2000 | 1487 | 
                                    
                                    52.7%
                                 | 
| 3 | Stop working before the year 2000 | 1332 | 
                                    
                                    47.3%
                                 | 
| Sysmiss | 22125 |