| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 1 |
1.4%
|
|
| 2008 | 2 |
2.8%
|
|
| 2009 | 1 |
1.4%
|
|
| 2010 | 2 |
2.8%
|
|
| 2012 | 3 |
4.2%
|
|
| 2013 | 8 |
11.1%
|
|
| 2014 | 14 |
19.4%
|
|
| 2015 | 29 |
40.3%
|
|
| 2016 | 12 |
16.7%
|
|
| Sysmiss | 267 |