| Value | Category | Cases | |
|---|---|---|---|
| -9 | 1 |
0.1%
|
|
| -3 | 26 |
2.1%
|
|
| 1995 | 1 |
0.1%
|
|
| 2000 | 5 |
0.4%
|
|
| 2001 | 14 |
1.1%
|
|
| 2002 | 16 |
1.3%
|
|
| 2003 | 23 |
1.8%
|
|
| 2004 | 33 |
2.7%
|
|
| 2005 | 48 |
3.9%
|
|
| 2006 | 60 |
4.8%
|
|
| 2007 | 58 |
4.7%
|
|
| 2008 | 85 |
6.8%
|
|
| 2009 | 62 |
5%
|
|
| 2010 | 82 |
6.6%
|
|
| 2011 | 75 |
6%
|
|
| 2012 | 110 |
8.8%
|
|
| 2013 | 105 |
8.4%
|
|
| 2014 | 114 |
9.2%
|
|
| 2015 | 19 |
1.5%
|
|
| 3333 | Missing | 4 |
0.3%
|
| 5555 | Not applicable | 1 |
0.1%
|
| 8888 | Refused | 1 |
0.1%
|
| 9999 | Don't know | 302 |
24.3%
|
| Sysmiss | 12673 |