| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 503 |
3.9%
|
|
| 2010 | 2116 |
16.3%
|
|
| 2011 | 2539 |
19.6%
|
|
| 2012 | 2622 |
20.2%
|
|
| 2013 | 3169 |
24.4%
|
|
| 2014 | 2017 |
15.6%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 7998 |