| Value | Category | Cases | |
|---|---|---|---|
| 1 | March | 11 |
1.9%
|
| 2 | April | 136 |
23.2%
|
| 3 | May | 335 |
57.1%
|
| 4 | June | 104 |
17.7%
|
| 5 | July | 1 |
0.2%
|
| 6 | August | 0 |
0%
|
| Sysmiss | 137 |