| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 1 |
0.2%
|
|
| 2014 | 2 |
0.3%
|
|
| 2015 | 3 |
0.5%
|
|
| 2016 | 71 |
11.3%
|
|
| 2017 | 547 |
87.4%
|
|
| 2018 | 1 |
0.2%
|
|
| 500000 | 1 |
0.2%
|
|
| Sysmiss | 17 |