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23? ???????? ?? ???????? ?? 10??(2010～2020?) ??? ???? ??? ??? ??? ??, 50? ?? ??? ??? ??? 2010? 15.7%?? 2020? 30.1%? 14.4%??? ????? ???. ?? ?? ?? 30?? 7.3%???, ???(15～29?)? 6.4%???, 40?? 0.8%???? ??? ??? ????.

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