| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2010 | 192 |
8.5%
|
| 2 | 2011 | 386 |
17.1%
|
| 3 | 2012 | 342 |
15.2%
|
| 4 | 2013 | 349 |
15.5%
|
| 5 | 2014 | 437 |
19.4%
|
| 6 | 2015 - before introduction of birth testing | 121 |
5.4%
|
| 7 | 2015 - after introduction of birth testing | 240 |
10.6%
|
| 8 | 2016 | 187 |
8.3%
|