??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
????????????:7?????5.7%
????????????:7?????5.7%
??
????:
1?????????:?????
2????????
3????????
4????????
5????????699
????
6
%
???:??