| Value | Category | Cases | |
|---|---|---|---|
| 1 | First quarter | 16402 |
26.2%
|
| 2 | Second quarter | 17167 |
27.4%
|
| 3 | Third quarter | 14294 |
22.9%
|
| 4 | Forth quarter | 14681 |
23.5%
|
| Sysmiss | 31627 |