| Valor | Categoría | Casos | |
|---|---|---|---|
| 2015 | 271099 |
89.3%
|
|
| 2016 | 30809 |
10.1%
|
|
| 2017 | 1684 |
0.6%
|
|
| 2018 | 113 |
0%
|
|
| Sysmiss | 9571 |