????: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???(???????) ????:????