????:1???50??????????:????

2????????

3???????

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

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

???11???27???????? (?????????????????? ?????????????????)??????????27??,??????,?????????????????????,??

?????????????????????,??????(????????????)??

????????????????????20??????????????,???????????11????????????????????22???????????,?????70?????????????????,??6????????

?300???,??8.6%??????????????????????8.7%??,?????????,?????????????????????(??) ????:?????????