?? ???? 5?8551?
40, 50?? ???? ??
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????????? ???? ??? ????? ??? ?? ???? ??? 2006? 3?5195??? 2011? 5?8551??? ??? 10.7% ???? 25? ???. ??? ???? ??(12.3%)? ??(9.3%)?? ???.
?????? 40?(28.7%)? 50?(23.5%)? ?? ???. ?? 30?(20.6%), 60?(10.5%), 20?(8.3%), 70?(5.7%), 10? ??(1.4%), 80? ??(1.3%)? ????. ?? 4? ? 3?? 30~50?? ???.
??? ???? “?? ??, ???? ???? ??? ?? ? ????? ???? ????? ???? ? ??? ??”? ????.
??? ?? evey@donga.com