| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 1 |
6.7%
|
|
| 2003 | 2 |
13.3%
|
|
| 2007 | 2 |
13.3%
|
|
| 2012 | 1 |
6.7%
|
|
| 2013 | 4 |
26.7%
|
|
| 2015 | 1 |
6.7%
|
|
| 2017 | 1 |
6.7%
|
|
| 2018 | 1 |
6.7%
|
|
| 2020 | 1 |
6.7%
|
|
| 2021 | 1 |
6.7%
|
|
| Sysmiss | 2520 |