б Ϳ 2003 10 2010 6  7Ⱓ ǰ  踦  , ü   
1.03%   100 1  ܹ,  ܹ   30 7.9%, 40 23.7% ϴ 
 Ÿ. 
̴    30~40   0.67%   Ҵ. 30~40  ̿ 150  1 ÷  
߰ߵǰ ִٴ . 30, 40뿡 ߰ߵ    42%  Ұ, ,    Ÿ. 
б   ּ  30~40  ̿  ߰ߵǴ  ū  ް ǿ  찡 ١ 
   ū    ݿ , Ģ , ǰ Ȱ,  ü   Ȱ   
  κ ̷      ſ ߿ϴ١ ߴ. 
  츮   1̸,  3  1,  10  3 ɸ    Ǿ. 
 ġ ߴ 5   ؼ  Ǿ, ̳ ,   5  20%  ĥ  
ġ̴. 
  迡    , , ,     ,  峻ð, Կ Ǵ  
     ߰ ϸ, ġ    ̴. 
  ǥ Ǻ ϵ 迡 Ÿ 츮 ε ռ 80  ,   ̶ Ͽ 
ɸ Ȯ 34.0% 3  1 Ͽ ɸ ̴. ɱ   踦     ϴ ɴ밡 ٷ 
30~40̰ 50ʹ ް   δ. 30~40 Ͽ  氢   ʿϴٴ  Ǯ̵  ִ. 
30, 40 ȸ ߿ ġ Ȱ ȸȰ ϴ ñ   ǰ аϱ  ṉ̃ ϴ. 
 ǰ Ȱ        ȿ ǰ ʿϴ.
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