????:1????????????:????sn

2???????????

3??????????

4???????????

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

??????12???????????????19?? (??)?????????????????19????????????????????,??,??????11???,???????????????4031.1????????????(????,??????????),??26%?

??11????,???????6.9%?231%??,??11??17.6%?

?,??,????????????,???????????????????238.9%?117.2%?190.5%??389.9%?

??????????11?,??????????????(??)?1629.2??????????,???40.4%?????????????????????????4?21.4%?

?????11??,???????????,????,???20????,????21%?(??) ????:???????????