??????
??????
??????
??????
??????
??????
??????
????????
??????
??????
??????
??????
???????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
??????????????:?? ?????
??????????????:?? ?????
??
????:
1????????????:??????????
2?????????100?????
3??????????
4???????????
5????????
????
6
%
???:??