| Value | Category | Cases | |
|---|---|---|---|
| 1997 | 1 |
9.1%
|
|
| 2008 | 1 |
9.1%
|
|
| 2009 | 1 |
9.1%
|
|
| 2010 | 1 |
9.1%
|
|
| 2012 | 1 |
9.1%
|
|
| 2013 | 2 |
18.2%
|
|
| 2015 | 2 |
18.2%
|
|
| 2016 | 1 |
9.1%
|
|
| 2017 | 1 |
9.1%
|
|
| Sysmiss | 204 |