40~50
2014 30 11.3
ǰ 䱸ǰ ִ ȵҺ 1õ ̻ Ḧ Ÿ.
ȣ 簡 ϵ ¸ ǹϸ ϵ Ƿ, ΰ , ü, , Ÿ ִ.
ȵҺ к ư ȣ ϴ ϼü ûϺ 찡 κ̸, ڰ鿪 (Ͻø亴) 70~90% Ѵ١ . ġ ȣ ϸ 2~3ֺʹ ȣ ڰ鿪 ȣ ؾ ϴ 쵵 ־ ְų 꼱 ִ , ӽŰȹ Ǵ ӽʱ ˻縦 ϰ ִ. ߴ.
Ϲ Ҽ , ΰǰ ǥ ϸ 2014 ο 41 3800 50밡 25.7% Ұ 40밡 21.2% Դ.
̴ ȣ߿ ư 50밡 ǰ Ƿ̿ ϴ ̱ ̸, 30 ϴ ӱ 20~30뿡 þ Ͱ δٰ ߴ.