| Value | Category | Cases | |
|---|---|---|---|
| -3 | 52 |
6.5%
|
|
| 2000 | 3 |
0.4%
|
|
| 2001 | 6 |
0.8%
|
|
| 2002 | 6 |
0.8%
|
|
| 2003 | 11 |
1.4%
|
|
| 2004 | 25 |
3.1%
|
|
| 2005 | 35 |
4.4%
|
|
| 2006 | 42 |
5.3%
|
|
| 2007 | 50 |
6.3%
|
|
| 2008 | 42 |
5.3%
|
|
| 2009 | 46 |
5.8%
|
|
| 2010 | 71 |
8.9%
|
|
| 2011 | 82 |
10.3%
|
|
| 2012 | 88 |
11%
|
|
| 2013 | 81 |
10.1%
|
|
| 2014 | 87 |
10.9%
|
|
| 2015 | 20 |
2.5%
|
|
| 3333 | Missing | 1 |
0.1%
|
| 5555 | Not applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 52 |
6.5%
|
| Sysmiss | 13171 |