| Value | Category | Cases | |
|---|---|---|---|
| 2008 | 5 |
0.1%
|
|
| 2009 | 4 |
0.1%
|
|
| 2010 | 15 |
0.2%
|
|
| 2011 | 13 |
0.2%
|
|
| 2012 | 48 |
0.8%
|
|
| 2013 | 97 |
1.6%
|
|
| 2014 | 434 |
7.1%
|
|
| 2015 | 3575 |
58.1%
|
|
| 2016 | 1965 |
31.9%
|
|
| Sysmiss | 11168 |