| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 51 |
1.1%
|
|
| 2013 | 1168 |
26%
|
|
| 2014 | 1716 |
38.2%
|
|
| 2015 | 1535 |
34.2%
|
|
| 2016 | 21 |
0.5%
|
|
| 9997 | Inconsistent | 3 |
0.1%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 32675 |