* Valuation in thousands of dollars
Columbus	One unit			Multi Unit			Total
Year	Buildings	Units	Valuation	Buildings	Units	Valuation	Buildings	Units	Valuation
1985	561	561	29,891	116	876	22,277	677	1,437	52,168
1986	752	752	40,916	74	423	10,794	826	1,175	51,710
1987	767	767	43,322	58	575	14,040	825	1,342	57,362
1988	739	739	40,740	25	187	5,608	764	926	46,348
1989	639	639	32,682	10	165	2,185	649	804	34,867
1990	520	520	27,608	14	92	2,344	534	612	29,952
1991	616	616	34,411	22	200	4,698	638	816	39,109
1992	835	835	57,494	13	39	1,367	848	874	58,861
1993	1,299	1,299	104,274	36	219	6,962	1,335	1,518	111,236
1994	1,242	1,242	110,490	94	708	21,659	1,336	1,950	132,149
1995	1,112	1,112	99,684	36	330	8,209	1,148	1,442	107,893
1996	1,105	1,105	108,310	14	151	4,721	1,119	1,256	113,031
1997	1,055	1,055	103,449	58	648	23,933	1,113	1,703	127,382
1998	1,032	1,032	119,032	53	661	24,113	1,085	1,693	143,145
1999	1,063	1,063	121,453	89	486	29,119	1,152	1,549	150,572
2000	969	969	115,127	64	669	33,021	1,033	1,638	148,148
2001	1,011	1,011	127,801	68	746	35,554	1,079	1,757	163,355
2002	1,160	1,160	147,938	80	277	12,970	1,240	1,437	160,908
2003	1,419	1,419	193,490	69	572	32,951	1,488	1,991	226,441
2004	1,590	1,590	212,147	65	488	39,615	1,655	2,078	251,762
2005	1,823	1,823	251,506	52	422	28,531	1,875	2,245	280,037
2006	1,635	1,635	234,827	57	592	36,426	1,692	2,227	271,253
2007	1,199	1,199	162,824	59	609	46,087	1,258	1,808	208,911
2008	823	823	124,770	35	277	20,347	858	1,100	145,117
2009	881	881	143,055	30	327	21,585	911	1,208	164,640
2010	869	869	144,084	44	515	32,993	913	1,384	177,077
Source: Prepared by the Selig Center for Economic Growth, based on Bureau of the Census, Construction Statistics Division: Housing Units Authorized by Building Permits (C-40).