Age of the children

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seven-year-olds

12.3%

9.4%

23.4%

12.6%

7.7%

9.8%

7.8%

eight-year-olds

15.1%

12.0%

20.5%

11.3%

12.0%

11.7%

19.6%

nine-year-olds

19.6%

17.1%

16.4%

23.9%

17.1%

19.3%

15.7%

ten-year-olds

21.7%

18.8%

14.6%

18.9%

16.2%

22.3%

25.5%

eleven-year-olds

31.3%

42.7%

14.1%

33.3%

47.0%

36.7%

31.4%