| Valor | Categoría | Casos | |
|---|---|---|---|
| 1 | Poco durable | 21141 |
0.5%
|
| 2 | Medianamente durable | 315559 |
7%
|
| 3 | Durable | 4135237 |
92.3%
|
| 9 | Ignorado | 7541 |
0.2%
|
| Sysmiss | 53684 |