| Value | Category | Cases | |
|---|---|---|---|
| 1996 | 1 |
2.9%
|
|
| 1998 | 1 |
2.9%
|
|
| 2001 | 1 |
2.9%
|
|
| 2005 | 1 |
2.9%
|
|
| 2006 | 1 |
2.9%
|
|
| 2008 | 1 |
2.9%
|
|
| 2011 | 3 |
8.8%
|
|
| 2012 | 2 |
5.9%
|
|
| 2014 | 5 |
14.7%
|
|
| 2015 | 3 |
8.8%
|
|
| 2016 | 5 |
14.7%
|
|
| 2017 | 5 |
14.7%
|
|
| 2018 | 5 |
14.7%
|
|
| Sysmiss | 2604 |