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2015?? 01?? 01?? -- ???? ??? ???? ???? ???? ?????? ??????? 2015?? ???? ??? ???θ? ???? ??? ????? ????? ??? ?????? ??????. ??? ?????δ? ‘???’?? ???? ???? ?????.
???????? ??????? ??븮????? 12?? 30?? ???? ???γ??? 1,000????? ??? ???θ? ???? ???? 19.0%?? 190???? ??? ??????? ??????? 2015?? ???? ??? ???θ? ??????. 59.5%?? ‘???? ????’???? ????? 34.2%?? ‘???? ???? ????’???? ???????. ‘?? ??’?? 6.3%????.
‘???? ????’???? ???? ????????? ??? ????? ?????? ???? ??? 52.2%?? ‘????? ????’??? ???? ???? ?????. ??? 31.9%?? ‘?????? ?o?’, 13.3%?? ‘?????? ?? ????? ??????’??? ???????. ‘???’?? 16.6%????.
???? ?????? ??븮????? ???? ???? “??u ???? ????? ?? ????? ?????? ???? ??? ???? ?????? ???? ???????? ??? ???? ???? ?????? ???δ?”?? “?????? ????? ????? ???? ? ?????????? ??? ?λ? ???????? ???? ?δ? ?????? ????? ????? ???? ????? ?????”?? ??????.
??? ?????? ??? ????? ???? 19?? ??? ???? 1,000????? ?????? RDD??????? ????, ?????, ???????? ????? ?????? ?? ?????? ??????? ????? ????, ?α? ?????? ?????? ?????????? ???????. ??????? 5.59%, ????????? 95% ????????? ±3.09%p???.
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