| Value | Category | Cases | |
|---|---|---|---|
| 777 | Not applicable | 0 |
0%
|
| 888 | Respondent refuses to answer | 0 |
0%
|
| 999 | Respondent does not know | 5 |
1.5%
|
| 1996 | 53 |
15.5%
|
|
| 1997 | 75 |
22%
|
|
| 1998 | 14 |
4.1%
|
|
| 1999 | 3 |
0.9%
|
|
| 2000 | 3 |
0.9%
|
|
| 2001 | 8 |
2.3%
|
|
| 2002 | 4 |
1.2%
|
|
| 2004 | 1 |
0.3%
|
|
| 2005 | 3 |
0.9%
|
|
| 2007 | 1 |
0.3%
|
|
| 2008 | 2 |
0.6%
|
|
| 2010 | 2 |
0.6%
|
|
| 2011 | 3 |
0.9%
|
|
| 2012 | 14 |
4.1%
|
|
| 2013 | 5 |
1.5%
|
|
| 2014 | 5 |
1.5%
|
|
| 2015 | 16 |
4.7%
|
|
| 2016 | 124 |
36.4%
|
|
| Sysmiss | 86 |