| Value | Category | Cases | |
|---|---|---|---|
| 1990 | 1 |
1.6%
|
|
| 2001 | 2 |
3.3%
|
|
| 2003 | 1 |
1.6%
|
|
| 2004 | 2 |
3.3%
|
|
| 2005 | 1 |
1.6%
|
|
| 2006 | 2 |
3.3%
|
|
| 2007 | 1 |
1.6%
|
|
| 2008 | 1 |
1.6%
|
|
| 2009 | 4 |
6.6%
|
|
| 2010 | 8 |
13.1%
|
|
| 2011 | 5 |
8.2%
|
|
| 2012 | 3 |
4.9%
|
|
| 2013 | 7 |
11.5%
|
|
| 2014 | 20 |
32.8%
|
|
| 2015 | 3 |
4.9%
|
|
| 3333 | Missing | 0 |
0%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 0 |
0%
|
| Sysmiss | 26743 |