| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 165 |
1.4%
|
|
| 2010 | 1817 |
15.7%
|
|
| 2011 | 2387 |
20.7%
|
|
| 2012 | 2483 |
21.5%
|
|
| 2013 | 2850 |
24.7%
|
|
| 2014 | 1855 |
16.1%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 9407 |