| Value | Category | Cases | |
|---|---|---|---|
| 1996 | 2 |
2.3%
|
|
| 2004 | 1 |
1.1%
|
|
| 2009 | 1 |
1.1%
|
|
| 2012 | 3 |
3.4%
|
|
| 2013 | 30 |
34.5%
|
|
| 2014 | 50 |
57.5%
|
|
| Sysmiss | 12233 |