| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 1 |
1%
|
|
| 2006 | 1 |
1%
|
|
| 2008 | 1 |
1%
|
|
| 2013 | 2 |
2.1%
|
|
| 2014 | 6 |
6.3%
|
|
| 2015 | 38 |
39.6%
|
|
| 2016 | 47 |
49%
|
|
| Sysmiss | 1404 |