????? 18? ? 1~10? ? ??? ????? ??? ?? ???? 2.91% ??? 6000?? ????. ?? ????? ????? ???? ??????? ?????? ??? 10?15?(1?500?)?? ? ??? 42.9%? ??? ?. ??????? ??? 10?14, 15? ??? ???? ???? 31.9% ??? ??? ???? ? ??.
????? 1~10? ? ???(????)? 1967?????? ????? 48?? ??? ????? ???. ????? ???? ?? 37?? ????. ????? 1~9? ? ???? 1750?????? ????? 10??, ????? 11??, ???? 14?? ????. ??????? ?? ???? ???? ????? ???? 10? ?? ?? ????? 58??, ???? 51???? ??? ???.
???? ??? ??????? “??????? ??? 700?? ?? ??? ??? ??? ??? ??? ?”??? ????.
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