| Value | Category | Cases | |
|---|---|---|---|
| 2001 | 1 |
0.7%
|
|
| 2008 | 1 |
0.7%
|
|
| 2011 | 7 |
4.8%
|
|
| 2012 | 48 |
33.1%
|
|
| 2013 | 74 |
51%
|
|
| 2014 | 13 |
9%
|
|
| 2016 | 1 |
0.7%
|
|
| Sysmiss | 59 |