| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 1 |
3.1%
|
|
| 2003 | 1 |
3.1%
|
|
| 2004 | 1 |
3.1%
|
|
| 2005 | 1 |
3.1%
|
|
| 2007 | 2 |
6.3%
|
|
| 2008 | 1 |
3.1%
|
|
| 2010 | 2 |
6.3%
|
|
| 2011 | 4 |
12.5%
|
|
| 2012 | 1 |
3.1%
|
|
| 2013 | 7 |
21.9%
|
|
| 2014 | 8 |
25%
|
|
| 2015 | 3 |
9.4%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 6449 |