| Value | Category | Cases | |
|---|---|---|---|
| 2006 | 1 |
0.1%
|
|
| 2009 | 1 |
0.1%
|
|
| 2013 | 2 |
0.2%
|
|
| 2014 | 7 |
0.7%
|
|
| 2015 | 132 |
13.8%
|
|
| 2016 | 804 |
84.1%
|
|
| 2017 | 9 |
0.9%
|
|
| Sysmiss | 3845 |