| Value | Category | Cases | |
|---|---|---|---|
| 99 | Don't know | 1258 |
34.2%
|
| 2003 | 1 |
0%
|
|
| 2005 | 1 |
0%
|
|
| 2006 | 1 |
0%
|
|
| 2009 | 1 |
0%
|
|
| 2010 | 2 |
0.1%
|
|
| 2011 | 1 |
0%
|
|
| 2012 | 3 |
0.1%
|
|
| 2013 | 5 |
0.1%
|
|
| 2014 | 9 |
0.2%
|
|
| 2015 | 848 |
23%
|
|
| 2016 | 1541 |
41.8%
|
|
| 2017 | 12 |
0.3%
|