| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 623 |
4.8%
|
|
| 2010 | 2189 |
16.7%
|
|
| 2011 | 2486 |
19%
|
|
| 2012 | 2540 |
19.4%
|
|
| 2013 | 3198 |
24.4%
|
|
| 2014 | 2062 |
15.7%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 7866 |