| Value | Category | Cases | |
|---|---|---|---|
| 1 | January | 3 |
1.7%
|
| 2 | February | 13 |
7.5%
|
| 3 | March | 10 |
5.7%
|
| 4 | April | 18 |
10.3%
|
| 5 | May | 59 |
33.9%
|
| 6 | June | 16 |
9.2%
|
| 7 | July | 8 |
4.6%
|
| 8 | August | 11 |
6.3%
|
| 9 | September | 9 |
5.2%
|
| 10 | October | 4 |
2.3%
|
| 11 | November | 6 |
3.4%
|
| 12 | December | 2 |
1.1%
|
| 99 | Missing | 15 |
8.6%
|