??? ??

115? ???о???20У?????????????????21????????

?￡

??????漰4.1(?13.5)о???20У????2015?????45%ζ????

?о??????3(John Toumbourou)??????????????

13??(Lily Parsons)???????????

???(Ryan Fennell)?15??????????

??о?1999?40%??к?У2015???11%??2015??10%????1999??45%2015??4%??顣

???3????21??п???????????20??