| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 181 |
1.5%
|
|
| 2010 | 1845 |
15.8%
|
|
| 2011 | 2372 |
20.3%
|
|
| 2012 | 2521 |
21.5%
|
|
| 2013 | 2901 |
24.8%
|
|
| 2014 | 1891 |
16.1%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 9253 |