| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 1 |
0.1%
|
|
| 2003 | 1 |
0.1%
|
|
| 2004 | 2 |
0.2%
|
|
| 2005 | 2 |
0.2%
|
|
| 2006 | 14 |
1.7%
|
|
| 2007 | 323 |
39.9%
|
|
| 2008 | 43 |
5.3%
|
|
| 9995 | 9995 = Missing | 0 |
0%
|
| 9997 | 9997 = Refusal | 147 |
18.2%
|
| 9998 | 9998 = Don't know | 0 |
0%
|
| 9999 | 9999 = Not Applicable | 276 |
34.1%
|