| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 243 |
4%
|
|
| 2010 | 1210 |
20.1%
|
|
| 2011 | 1327 |
22%
|
|
| 2012 | 1460 |
24.3%
|
|
| 2013 | 1704 |
28.3%
|
|
| 2014 | 73 |
1.2%
|
|
| 9997 | Inconsistent | 2 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 43188 |