| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 1529 |
7%
|
|
| 2010 | 4583 |
20.9%
|
|
| 2011 | 4583 |
20.9%
|
|
| 2012 | 4336 |
19.8%
|
|
| 2013 | 4450 |
20.3%
|
|
| 2014 | 2415 |
11%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 131944 |