fjrigjwwe9r3edt_lecture:conts 
  ǰɻ  ֱ 3Ⱓ(2006-2008)   ȯڴ  ɿ ϴ  
, Ư 30 ̻ ū  ϰ ִ  Ÿ.   2008    30 7.2%, 
40 22.7%, 50 32.5% ü 60%̻ ϴ  Ÿ.
    ϴ  
ܱ     ˻  ġḦ   þ ̴.
      Ȥ , 
ȭ ߿ 忡   .  Ȯϰ  ʾ    缺Ȥ  ġصθ  ȭ 
 ִ. 
  ֱ 츮 ĻȰ ȭǰ ַ   ϰ Ǹ鼭  ϰ ϰ ִ.   
Ϸ ħ ܳ  ƴϴ. ʱ       ڶ ()̶  Ȥ ǰ   Ŀ  
  ִ ̴.     ܰ迡  ̸ ν    ִ.
    ϱ 
ؼ  ̰ Ҹ  ϴ  . Ҵ    뺯    ְ ν  طο  
Ǵ ð ٿش. Ҵ Ư    ִµ ̼,   Ұ  ̰,   , 
丮,  , ̿, , ķ  , Ϸδ , , äδ ,   Ұ  ǰ̴. , 
Ҹ     ž    ִ.
       ִ ,   ߺ 
 μ   ʿ ̴.
   40 ̻   ܹ, ( Ư , , , 
ҽ)  ų ָ  ðų   Դ    弱    忡  Ȥ 뷮  
 弱 Ǵ Ȥ     Ǵ             
ִ       ȯ ΰ ִ     
  ñ
    峻ðۿ ? 
  , 뺯  DNA ˻ Ȯ ! 
     ϱ! 
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