| Value | Category | Cases | |
|---|---|---|---|
| 1 | January | 1 |
0.6%
|
| 2 | February | 4 |
2.5%
|
| 3 | March | 5 |
3.1%
|
| 4 | April | 9 |
5.6%
|
| 5 | May | 1 |
0.6%
|
| 6 | June | 5 |
3.1%
|
| 7 | July | 33 |
20.6%
|
| 8 | August | 19 |
11.9%
|
| 9 | September | 28 |
17.5%
|
| 10 | October | 27 |
16.9%
|
| 11 | November | 17 |
10.6%
|
| 12 | December | 11 |
6.9%
|
| 13 | All year (operated every month) | 0 |
0%
|
| Sysmiss | 1912 |