???????????????:????

????:?????????:??????sn

???????10??14?? (??????? ??????????)?14???????????????,??,???????????????????

????????,??,?????,?????????,????????????????,?????????,????????????????

?????,9??????????????????????1.6%,??6?????????????????,?????

???????,9????????????????????????????????????,??????????????????????????????????,???,???????????????????????????????????,??,???9???????????,9?????

???,??????????,?800?????????????????,69%??????(???) ????:??????????????????????