pk=OL RwQ 10 Qy QO xQwO u}= QO |UQQ@ OQwt C}=U "Ov=xOQm |UQQ@ 13 lQw}w}v Vy=m OYQO 1 R= |m =L =yu; |=yV}=tR; G}=Dv wQ u}= R= w xDW=O |oOvQ=@ Q=@ l} "CU= xOt; CUO x@ Q}O=kt QO w |t}rk= C= Q}}eD xm CU= u; R= |m =L xRwL u}= QO x}rw= |=yxar=]t |UQQ@ l}}=DrwwDi |=ypvB |}=Q=m w OQmrta Q@ Q=@e w OQo QF= u= R}t Q@ COW x@ |]}Lt |=yQDt= Q=B u=}t R= 'xRwL u}= QO xOW s=Hv= C=ar=]t QwQt =@ |rm Qw] x@ "OQ=O Q}F-=D TvH 'u; CyH w O=@ VRw u= R}t x@ u=wD|t K]U Q@ Q=@e w OQo CUWv Q@ QFwt VWwB TvH 'wH QO OwHwt C@ w]Q '=wy Q=Wi 'Q=@e C= QP |oOv@UJ w Q=@e w OQo QO |r}tmD C=ar=]t s=Hv= 'wQu}= R= "OQm xQ=W= =ypvB ?Yv ?}W 'pvB |}xW}W uwJty =}vO j]=vt R= |Q=}U@ xm =Hu; R= "CU= C}ty= R=L Q=}U@ s}rk= Qy =@ \=@DQ= |Oa=Ut \}=QW |}=}i=QeH^=Lr R= 'u= Q}= XwYN x@ w =k} Qi; p=tW w xv=}tQw=Ǹ tHD pmWt x@ xHwD =@ p=L u}a QO w OvQ=O |O}WQwN |SQv= R= |Q=OQ@xQy@ |= Q@ l} s=Hv= =@ 'Ovvm|t sQv xHvB w CUO l}}=DrwwDi |=ypvB Kw]U |wQ Q=@e w OQo "CW=OQ@ pmWt u}=`iQ QO |oQR@ sOk u=wD|t 'xv}tR u}= QO pt=m |xar=]t |xRwL QO xDiQo CQwY C=ar=]t |xv}W}B |UQQ@ x@ 'Q[=L |xr=kt wQu}= R= C=}YwYN =OD@= "OR=OQB|t l}}=DrwwDi |=ypvB K]U R= Q=@e w OQo hPL |=yVwQ OQwt Q[=L VywSB |xRwL QO =yu; QF= w Q=@e w OQo C= QP |}=}t}W w |m} R}i w =tQo p=kDv= Q@ sm =L CqO=at x@ QYDNt CQwYx@ xwqa x@ "OQ}o|t Q= Qk |UQQ@ xm |}=yj}kLD 'R}v xt=O= QO "OwW|t xQ=W= R}v l}}=DrwwDi |=ypvB Q@ Q=@e w OQo QF= 'Ov=xDN=OQB =yu; K]U R= Q=@e w OQo hPL w l}}=DrwwDi Kw]U |Q=mR}tD Qw_vt x@ Oy=wN |Ov@xDUO |Q=mR}tD |=yVwQ u}= xwqax@ "OQ}o|t Q= Qk j}kO |UQQ@ OQwt "OW Q=@e w OQo C= QP C=}YwYN "2 'l}}=DrwwDi |=ypvB K]U Q@ Q=@e w OQo C= QP CUWv w`tHD |xwLv QDy@ lQO |= Q@ ?}mQD w |SwrwiQwt p}rLD 'C= QP xR=Ov= pt=W Q=@e w OQo C= QP |=yxYNWt |NQ@ |UQQ@ x@ VN@ u}= QO "CU= Q=OQwNQ@ |}xS} w C}ty= R= R}v =yu; |}=}t}W "s}R=OQB|t xv}tR u}= QO xDiQo CQwY |=yVywSB C= QP xR=Ov= "1"2 }RwD |SwrwiQwt w xR=Ov= u}}aD |= Q@ 'xRwL u}= QO xDiQo CQwY |=yVywSB QO w 14 |W@ wQ |vwQDmr= AwmUwQm}t '|Qwv |=yVwQ R= OQ=wt QDW}@ QO C= QP |SwrwiQwt w xR=Ov= 1 pwOH "CU= xOW xDiQo xQy@ 15 |W@ wQ ?wQBAwmUwQm}t |UQQ@ "OyO|t u=Wv = Q hrDNt |=yQwWm R= xOW |Qw;`tH Q=@e w OQo C= QP`}RwD Q}F-=D 'CWQO C= QP x@ C@Uv QDR} Q C= QP xm OyO|t u=Wv xDiQoCQwY |=yVywSB "OvQ=O l}}=DrwwDi |=ypwS=t OQmrta Q@ |QDW}@ ly; nvU`wv xU w u=t}U 'QDUm=N CUWv Q}F-=D [8] 'u}UL w |Wm@Wr= = Q l}}=DrwwDi |=ypvB OQmrta Q@ QDtwQm}t 80 w 60 '50 '10 '5 \UwDt Q]k =@ "OvO=O Q= Qk xar=]t OQwt |y=oW}=tR; xOW pQDvm \}=QW CLD `@QtQDt Q@ sQo 25 |w=Ut Q=@e w OQo |r=oJ =@ |v=Wvx}q xm OvO=O u=Wv =yu; Vy=m QDW}@ = Q |HwQN u=wD QDlJwm C= QP 'ly; nvU uwo=vwo |=yQ]k =@ =t= l}}=DrwwDi |xv=t=U |HwQN u=wD xm O=O u=Wv u}vJty =yu; |xar=]t "OvyO|t "Ci=} Vy=m 'OYQO 90 w 40 '?}DQDx@ u=t}U w QDUm =N C= QP |v=Wvx}q s=ovy l}D=}rwwDi |=yxv=t=U OQmrta Q@ Q=@e w OQo Q}F-=D xRwL QO =yVywSB O=OaD "1 pmW [3] "20182000