????:1?????600?????:????vx

2?????????

3???????

4?????????

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

??(8???7??)???????,???7?,???24.83?????,????

???,??7??????????????,???????????24.83??????????,???6.2%?

???14.26?????,???6.7%;

??10.57?,??5.4%?

7??????????,??3.68??????,??????6.5%?

????2.14???,????6.5%;

????1.54???,??6.6%?

??? ????:???,????,??????????????7???????????,??,7???????????,??4????5%??????

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