-68%
14-15 years
-73%
16-17 years
-75%
14-15 years
-76%
15-16 years
-76%
14-15 years
-76%
15-16 years
-77%
12-13 years
-77%
13-14years
-78%
14-15 years
-78%
13-14years
-80%
12-13 years
-81%
15-16 years
-81%
13-14years
-92%
14-15 years
-93%
11-12 years
-93%
14-15 years
-94%
8-9 years