16-17-18年齢graphpoint-6(0%)7(0%)8(0%)9(0%)101(1.6%)11(0%)121(1.6%)13(0%)144(6.6%)154(6.6%)1614(23.3%)1713(21.6%)1812(20%)191(1.6%)204(6.6%)211(1.6%)221(1.6%)232(3.3%)241(1.6%)25(0%)26(0%)27(0%)28-1(1.6%)端数は切り捨てられています。