| value | category | cases | |
|---|---|---|---|
| 2006 | 125 |
1.9%
|
|
| 2007 | 946 |
14.1%
|
|
| 2008 | 1224 |
18.3%
|
|
| 2009 | 1430 |
21.3%
|
|
| 2010 | 1808 |
27%
|
|
| 2011 | 1171 |
17.5%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| 10001 | .Z | 31280 |