| Value | Category | Cases | |
|---|---|---|---|
| 1 | January 2015 | 0 |
0%
|
| 2 | February 2015 | 0 |
0%
|
| 3 | March 2015 | 8 |
4%
|
| 4 | April 2015 | 151 |
75.9%
|
| 5 | May 2015 | 25 |
12.6%
|
| 6 | June 2015 | 6 |
3%
|
| 7 | July 2015 | 4 |
2%
|
| 8 | August 2015 | 1 |
0.5%
|
| 9 | September 2015 | 4 |
2%
|
| 10 | October 2015 | 0 |
0%
|
| Sysmiss | 1 |