| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 384 |
1.4%
|
|
| 2012 | 5689 |
20.3%
|
|
| 2013 | 5917 |
21.1%
|
|
| 2014 | 5505 |
19.6%
|
|
| 2015 | 5551 |
19.8%
|
|
| 2016 | 5002 |
17.8%
|
|
| 2017 | 18 |
0.1%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9999 | Missing | 18 |
0.1%
|
| Sysmiss | 494 |