1880	1900	1910	1920
	AK		AK
AL	AL	AL	AL
AR		AR	AR
AZ	AZ		AZ
CA	CA	CA	CA
CO	CO		CO
CT	CT		CT
Dakota
DE	DE		DE
DC	DC		DC
FL	FL	FL	FL
GA	GA	GA	GA
	HI		HI
ID	ID		ID
IL	IL	IL	IL
IN	IN		IN
IA	IA		IA
KS	KS	KS	KS
KY	KY	KY	KY
LA	LA	LA	LA
ME	ME		ME
MD	MD		MD
MA	MA		MA
MI	MI	MI	MI
MN	MN		MN
MS	MS	MS	MS
MO	MO	MO	MO
MT	MT		MT
NE	NE		NE
NV	NV		NV
NH	NH		NH
NJ	NJ		NJ
NM	NM		NM
NY	NY		NY
NC	NC	NC	NC
			ND
OH	OH	OH	OH
	OK	OK	OK
OR	OR		OR
PA		PA	PA
RI	RI		RI
SC	SC	SC	SC
	SD		SD
TN	TN	TN	TN
TX	TX	TX	TX
UT	UT		UT
VT	VT		VT
VA	VA	VA	VA
WA	WA		WA
WV	WV	WV	WV
WI	WI		WI
WY	WY		WY