| Value | Category | Cases | |
|---|---|---|---|
| 2002 | 1 |
7.7%
|
|
| 2004 | 1 |
7.7%
|
|
| 2009 | 1 |
7.7%
|
|
| 2014 | 1 |
7.7%
|
|
| 2016 | 2 |
15.4%
|
|
| 2017 | 1 |
7.7%
|
|
| 2018 | 4 |
30.8%
|
|
| 2019 | 2 |
15.4%
|
|
| Sysmiss | 294 |