???????????(??????)????·?????????? ????????????
?????10??
10~20????
???????????????????95~159
16???????“??????”????????????(??????)?????153~209
20~30????
??????????????????????????270~319
30~36????
????????????????346~393
36~40????
????????????516~590
40~50????
?????????????????????????Σ??????÷????????587~645
50???????
????Σ??????????????????????????1330????