| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 329 |
2.6%
|
|
| 2010 | 2031 |
16.3%
|
|
| 2011 | 2491 |
19.9%
|
|
| 2012 | 2597 |
20.8%
|
|
| 2013 | 3090 |
24.7%
|
|
| 2014 | 1959 |
15.7%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 8467 |