year,_id,p_count,age
104,1,0,0~5
104,2,0,6~11
104,3,0,12
104,4,0,13
104,5,0,14
104,6,0,15
104,7,2,16
104,8,2,17
104,9,14,18~19
104,10,20,20~24
104,11,12,25~29
104,12,22,30~34
104,13,21,35~39
104,14,20,40~44
104,15,21,45~49
104,16,20,50~54
104,17,16,55~59
104,18,9,60~64
104,19,7,65~69
104,20,7,70~74
104,21,5,75~79
104,22,3,80~84
104,23,1,85~89
104,24,0,90~
104,25,0,不明