????:1?????????:????????????

2?????????

3?????????????

4???????

5?????????????

????????,???????????????????????????????????????????????1????????????????????????,??????????,??????????

????,??1????????10%,?????????12.1%;??1??11.89%,??????????19.71%;?????1?????????12.47%,?????????17.67%??????????1?????

?? ?????????:???????,

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

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

???????????????,??????????????????????1???????????????????????????,??,????,??????????????????????1??????????,??????????????????????? ???:???????