;Investigations started during the year; Year;; 2015;43681; 2016;47865; ;; 2017;48732; Age;; 0-2 years;5955; 3-5 years;8125; 6-12 years;19944; 13-17 years;13823; 18-22 years;884; Unknown age;1; Sex;; Boys;26235; Girls;22497; Unknown sex;0;