| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 1 |
0.6%
|
|
| 2003 | 1 |
0.6%
|
|
| 2004 | 2 |
1.2%
|
|
| 2005 | 3 |
1.9%
|
|
| 2006 | 3 |
1.9%
|
|
| 2007 | 1 |
0.6%
|
|
| 2008 | 6 |
3.7%
|
|
| 2009 | 12 |
7.5%
|
|
| 2010 | 20 |
12.4%
|
|
| 2011 | 44 |
27.3%
|
|
| 2012 | 49 |
30.4%
|
|
| 3333 | Missing | 2 |
1.2%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 17 |
10.6%
|
| Sysmiss | 12055 |