| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 1 |
0.1%
|
|
| 1997 | 2 |
0.2%
|
|
| 1999 | 1 |
0.1%
|
|
| 2000 | 4 |
0.5%
|
|
| 2001 | 1 |
0.1%
|
|
| 2002 | 2 |
0.2%
|
|
| 2004 | 4 |
0.5%
|
|
| 2005 | 2 |
0.2%
|
|
| 2006 | 40 |
4.9%
|
|
| 2007 | 399 |
49.3%
|
|
| 2008 | 47 |
5.8%
|
|
| 9995 | 9995 = Missing | 0 |
0%
|
| 9997 | 9997 = Refusal | 147 |
18.2%
|
| 9998 | 9998 = Don't know | 0 |
0%
|
| 9999 | 9999 = Not Applicable | 159 |
19.7%
|