ΰǰ ǰå 2002 2009 ǰ ڷḦ м , 롯 ȯڰ 2002 21 7õ 2009 69 7õ ֱ 7 (2002~2009) 3.2, 18.1% ߴ.
ɺ 캸, ȯ 83% 50~70뿡 ִ.
ɺ α 10 ȯڸ мغ, α ȯڰ ٸ ɴ뿡 Ǿ ִ.
ȣ ȯ þ ȭ Ǽ ȭ ɳ ڰ(awareness) þ , ƿ ֱ ġ ȫ ϴ κ̴١ ߴ.
㿡 Һ Ǵ ߰, Һ ٱⰡ ðų ־ ǽ , ̷ Ḧ ʿ伺 ִ.
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