| Value | Category | Cases | |
|---|---|---|---|
| 1988 | 1 |
7.1%
|
|
| 2007 | 1 |
7.1%
|
|
| 2008 | 1 |
7.1%
|
|
| 2012 | 1 |
7.1%
|
|
| 2013 | 1 |
7.1%
|
|
| 2016 | 2 |
14.3%
|
|
| 2017 | 2 |
14.3%
|
|
| 2018 | 4 |
28.6%
|
|
| 2019 | 1 |
7.1%
|
|
| Sysmiss | 3193 |