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

2???????

3?????

4??????????

5?????????

?????2?18? ????18????,1?,?????3.69????,???????????12.1%?

???,????,????????????,??2.75?????,??74.6%,??10.6%???????????1446.17????,???17.6%,????????????971????,???????????18.9%?

???,1??????,???4.23???????????,????2884.72??????,?????????????3.27?????????,???2664.89????????,????????0.77????0.48?????,?????????10.9%???????????17.5%?

???,1?,????439????,??3.7%,????????18.3???(???????) ???:?????????