| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 62 |
0.9%
|
|
| 2012 | 1362 |
19.4%
|
|
| 2013 | 1309 |
18.7%
|
|
| 2014 | 1321 |
18.9%
|
|
| 2015 | 1308 |
18.7%
|
|
| 2016 | 1255 |
17.9%
|
|
| 2017 | 19 |
0.3%
|
|
| 9999 | Missing | 1 |
0%
|
| Sysmiss | 368 |
5.3%
|