| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 1 |
7.1%
|
|
| 2014 | 3 |
21.4%
|
|
| 2015 | 5 |
35.7%
|
|
| 2016 | 4 |
28.6%
|
|
| 9999 | NOT STATED | 1 |
7.1%
|
| Sysmiss | 7552 |