?????? ??PCS ??? 514?? ???? ?? ????? ??? ?? ‘????’??? ??? ??? ???? ??? ????? ???.

‘???? ???? ??? ???????? ??? ??? ?? ??? ???? ??’? ??? 73.0%? ????. ‘??? ???? ????? ????’?? ??? 17.7%? ???. ‘????’? 9.3%. ‘??’? ???? ??? 20? 67.2%, 30? 76.2%, 40? ?? 88.0% ? ??? ???? ???.

?????? ???? 78.2%? ‘????? ??? ??? ??? ??? ??? ????? ? ???? ??’? ????.

‘????? ??? ???? ???? ??? ??? ??? ?? ????’? ??? 15.8%.

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