4?? 1?2000? ?? 126? ??… ? ?? 4~6? ???-??? ??
17? ???? ??? ?? 4??(2009~2012?) ? 1?1988?? ??? ????? ??? 126?? ??? ??? ????. ??? 2010??? ?? ??? 2012? ? ??? 3255?? ??? ??? 29?? ???? 3342?? ???.
???? ?? 3~5?? 3045?(25.4%), 9~11? 3752?(31.3%)? ??? ?·?? ??? ???. ?????? ?? 4~6?(13.6%), ?? 6~8?(13.0%), ?? 8~10?(11.5%) ????. ?? ????? ??? ? ??? ??? ??? 85.7%(1?276?)? ????. ?? ??? ???? 36.1%? ?? ??? ???? 15.8%? ????.
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