| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 1 |
0%
|
|
| 2010 | 1004 |
11%
|
|
| 2011 | 1982 |
21.7%
|
|
| 2012 | 2149 |
23.5%
|
|
| 2013 | 2377 |
26%
|
|
| 2014 | 1628 |
17.8%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 11823 |