how many centers have won defensive player of the year

Centers won the Defensive Player of the Year award once in 1984-85.

Interpreted as:

How many centers have won defensive player of the year in a regular season?

	POSITION	DPOY	SEASON	GP	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
1	Center	1	1984-85	3,904	22.6	9.5	6.1	1.3	0.5	1.1	3.7	7.2	51.0	0.0	0.0	11.5	2.1	2.9	73.9	55.9	1.9	4.2	1.6	88,295	37,170	23,918	5,021	2,004	4,377	6,206	10,783
2	Center	1	1988-89	4,434	20.5	8.2	5.4	1.0	0.5	1.0	3.2	6.5	49.2	0.0	0.1	28.7	1.8	2.5	71.6	54.1	1.7	3.7	1.4	90,842	36,454	23,939	4,277	2,269	4,424	6,083	11,355
3	Center	1	1991-92	4,617	21.2	8.2	5.6	1.1	0.5	1.1	3.2	6.6	49.0	0.0	0.1	25.9	1.7	2.4	70.0	53.4	1.8	3.8	1.2	97,747	37,871	25,806	4,930	2,476	5,183	5,691	11,437
4	Center	1	1992-93	4,495	20.7	8.4	5.6	1.1	0.5	1.1	3.3	6.6	49.6	0.0	0.1	25.1	1.8	2.6	69.1	54.0	1.8	3.8	1.3	93,030	37,593	25,360	4,922	2,385	4,731	5,894	11,369
5	Center	1	1993-94	4,750	21.4	9.0	5.6	1.2	0.6	1.0	3.5	7.1	49.9	0.0	0.1	28.4	1.9	2.8	68.1	54.2	1.8	3.8	1.4	101,665	42,649	26,459	5,652	2,798	4,972	6,546	12,105
6	Center	1	1994-95	4,493	22.1	8.7	5.7	1.0	0.5	1.1	3.4	6.8	50.3	0.1	0.2	32.4	1.8	2.6	68.8	54.8	1.9	3.9	1.4	99,099	39,108	25,735	4,403	2,297	4,862	6,133	12,308
7	Center	1	1996-97	4,718	21.1	7.7	5.4	0.9	0.5	1.0	3.0	6.2	49.1	0.0	0.1	31.8	1.6	2.4	67.1	53.3	1.8	3.6	1.3	99,351	36,258	25,504	4,220	2,345	4,778	6,042	12,110	+197
8	Center	1	1997-98	4,679	21.2	7.9	5.6	1.0	0.5	1.1	3.1	6.4	48.2	0.0	0.2	28.7	1.7	2.6	66.7	52.6	1.9	3.7	1.2	99,158	37,066	26,191	4,498	2,464	5,035	5,847	12,107	+235
9	Center	1	1998-99	2,965	21.0	7.5	5.6	0.9	0.5	1.0	2.9	6.1	47.5	0.0	0.1	21.7	1.7	2.6	64.5	51.7	1.9	3.7	1.2	62,369	22,257	16,593	2,587	1,577	2,938	3,524	7,700	-270
10	Center	1	1999-00	4,879	20.9	7.8	5.5	0.9	0.5	1.1	3.0	6.4	47.9	0.0	0.1	31.3	1.7	2.5	68.0	52.5	1.8	3.8	1.3	101,889	38,215	27,069	4,412	2,278	5,287	6,130	13,124	-606
11	Center	1	2000-01	4,778	21.1	7.2	5.7	0.8	0.5	1.1	2.8	6.0	47.0	0.0	0.1	23.7	1.6	2.4	66.8	51.4	1.9	3.8	1.2	100,617	34,409	27,296	3,947	2,399	5,264	5,635	12,238	-153
12	Center	1	2001-02	5,083	20.2	7.0	5.4	0.8	0.5	1.0	2.7	5.7	47.9	0.1	0.2	35.5	1.5	2.2	66.9	52.5	1.8	3.6	1.0	102,801	35,672	27,289	3,857	2,503	5,038	5,257	12,121	-612
13	Center	1	2002-03	5,393	20.5	6.8	5.2	0.9	0.5	1.0	2.7	5.6	47.3	0.0	0.1	30.1	1.5	2.2	68.6	51.9	1.8	3.4	1.1	110,321	36,803	28,071	4,739	2,744	5,313	6,021	13,396	-915
14	Center	1	2004-05	5,499	19.6	6.8	5.0	0.7	0.4	0.9	2.6	5.4	49.3	0.0	0.1	32.2	1.5	2.2	67.5	53.9	1.7	3.2	1.1	107,825	37,548	27,278	4,099	2,366	4,826	5,787	13,913	-167
15	Center	1	2005-06	5,289	20.3	6.7	5.2	0.7	0.4	0.9	2.6	5.3	49.9	0.1	0.2	32.2	1.3	2.0	65.3	54.1	1.7	3.4	1.1	107,528	35,221	27,251	3,836	2,317	4,777	5,689	13,703	-296
16	Center	1	2006-07	4,985	22.0	8.2	5.9	1.0	0.5	1.0	3.2	6.2	51.2	0.1	0.2	33.0	1.8	2.6	66.3	55.5	1.9	4.0	1.3	109,637	40,856	29,174	4,843	2,447	5,028	6,702	13,049	+192
17	Center	1	2008-09	5,235	21.7	8.4	5.9	1.0	0.5	1.0	3.3	6.3	51.6	0.1	0.2	34.1	1.7	2.5	69.4	56.1	1.9	4.0	1.2	113,802	43,721	30,808	5,410	2,490	5,183	6,242	13,093	-826
18	Center	1	2009-10	4,822	21.8	8.5	5.9	1.1	0.5	1.0	3.4	6.5	51.6	0.1	0.3	33.0	1.7	2.4	69.0	56.0	1.8	4.0	1.2	105,116	40,901	28,230	5,288	2,247	4,635	5,894	11,917	-258
19	Center	1	2010-11	5,266	21.0	7.9	5.6	1.0	0.5	0.9	3.1	6.2	50.8	0.0	0.1	30.1	1.6	2.4	67.4	54.7	1.8	3.8	1.2	110,505	41,683	29,268	5,392	2,595	4,945	6,167	12,710	-282
20	Center	1	2011-12	3,866	20.6	7.5	5.7	0.9	0.5	1.0	3.0	6.0	50.1	0.0	0.1	26.0	1.4	2.2	66.5	53.8	1.8	3.9	1.2	79,664	28,859	22,121	3,573	2,096	3,790	4,457	8,346	-481
21	Center	1	2012-13	5,351	21.2	8.1	5.9	1.0	0.5	1.0	3.3	6.5	51.0	0.0	0.1	24.4	1.5	2.2	67.7	54.5	1.9	3.9	1.2	113,395	43,423	31,343	5,556	2,833	5,348	6,360	11,960	+231
22	Center	1	2013-14	5,474	20.6	8.1	6.0	1.1	0.5	0.9	3.2	6.3	51.2	0.1	0.2	30.9	1.5	2.2	67.9	55.2	1.9	4.1	1.2	112,800	44,086	32,617	5,750	2,800	4,887	6,516	12,544	-934
23	Center	1	2017-18	5,176	20.5	9.1	6.2	1.5	0.5	0.8	3.6	6.7	53.0	0.3	0.9	35.7	1.6	2.3	70.4	58.6	1.8	4.5	1.3	105,976	46,999	32,221	7,663	2,795	4,280	6,508	11,174	+37
24	Center	1	2018-19	4,631	21.5	10.4	6.9	1.7	0.6	1.0	4.1	7.5	54.2	0.3	1.0	33.2	1.9	2.6	71.2	59.7	2.1	4.8	1.3	99,636	48,001	31,949	7,736	2,817	4,653	5,854	10,830	+821
25	Center	1	2020-21	3,556	21.9	10.1	6.8	1.6	0.6	1.0	3.9	7.3	54.4	0.5	1.4	34.2	1.7	2.4	71.4	60.6	2.1	4.8	1.2	77,844	35,751	24,216	5,768	2,082	3,457	4,415	7,846	-830