??? 5? ??? 1?? ???? ??? ??? ??? ????? ??? ??? ????.
???? ?? ??? ?? ??????? 8? “????? 4998?? ???? ???? ?? ??? ??? ??, ?? ??? ??? ‘????’? 2.9%, ??? ??? ‘??? ???’? 16.1%? ?? ??? 19%? ????? ??? ??? ????”? ???.
???(15.9%)??? ???(22.8%)? ?? ??? ??? ‘????(7.7%)→???(24.5%)→???(26%)’ ??? ??? ????? ??? ???. ???? ??? ‘??? ?? 50? ??’?? ?? ??? 25.2%?, ??? ???(18.1%), ??????(12.0%)?? ???. ????? ?? ??? ?? ??????(gbiwill.or.kr).