how many different teams have won the nba title in the last 30 years

The Chicago Bulls won 1 championship in 1995-96.

Interpreted as:

How many different teams have won the NBA title in a regular season in the last 30 years?

	TEAM	CHAMPS	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	Bulls	1	1995-96	82	240.6	105.2	44.6	24.8	9.1	4.2	40.2	84.0	47.8	6.6	16.5	40.3	18.2	24.4	74.6	55.5	15.2	29.4	13.8	19,730	8,625	3,658	2,033	745	345	1,134	1,807
2	Bulls	1	1996-97	82	240.6	103.1	45.1	26.1	8.7	4.0	40.0	84.4	47.3	6.4	17.1	37.3	16.8	22.5	74.7	54.7	15.1	30.0	13.1	19,730	8,458	3,696	2,142	716	332	1,075	1,617
3	Bulls	1	1997-98	82	242.1	96.7	44.9	23.8	8.5	4.3	37.4	82.9	45.1	3.8	11.7	32.3	18.2	24.5	74.3	51.6	15.2	29.7	13.3	19,855	7,931	3,681	1,952	696	353	1,091	1,691
4	Spurs	1	1998-99	50	241.5	92.8	44.0	22.0	8.4	7.0	34.8	76.2	45.6	3.4	10.4	33.0	19.8	28.3	69.8	52.3	12.3	31.7	14.3	12,075	4,640	2,198	1,101	421	351	717	1,010
5	Lakers	1	1999-00	82	241.5	100.8	47.0	23.4	7.5	6.5	38.3	83.4	45.9	4.2	12.8	32.9	20.1	28.9	69.6	52.5	13.6	33.4	13.5	19,805	8,267	3,855	1,921	613	534	1,106	1,841
6	Lakers	1	2000-01	82	242.7	100.6	44.7	23.0	6.9	6.0	37.9	81.5	46.5	5.4	15.5	34.4	19.4	28.5	68.3	53.5	13.2	31.5	13.9	19,905	8,251	3,668	1,888	564	490	1,137	1,872
7	Lakers	1	2001-02	82	241.2	101.3	44.3	23.0	7.6	5.8	38.4	83.4	46.1	6.2	17.5	35.4	18.2	26.1	69.9	53.4	12.5	31.8	12.1	19,780	8,304	3,629	1,882	625	478	995	1,823
8	Spurs	1	2002-03	82	241.8	95.8	42.6	20.0	7.7	6.5	35.5	76.8	46.2	5.5	15.5	35.4	19.4	26.8	72.5	54.1	11.5	31.2	15.4	19,830	7,856	3,495	1,636	629	529	1,260	1,672
9	Pistons	1	2003-04	82	241.2	90.1	42.8	20.8	8.0	7.0	33.5	77.0	43.5	4.1	11.8	34.4	19.0	25.3	75.3	51.1	12.4	30.4	14.4	19,780	7,388	3,506	1,702	659	570	1,179	1,664
10	Spurs	1	2004-05	82	241.5	96.2	42.4	21.6	7.5	6.6	35.6	78.7	45.3	6.2	17.0	36.3	18.7	25.9	72.4	53.4	12.0	30.4	13.0	19,805	7,888	3,476	1,771	613	543	1,068	1,717
11	Heat	1	2005-06	82	240.9	99.9	43.1	20.6	6.4	5.4	37.1	77.5	47.8	6.1	17.6	34.5	19.7	28.2	70.0	55.6	10.5	32.6	13.9	19,755	8,191	3,533	1,692	522	442	1,139	1,871
12	Spurs	1	2006-07	82	241.2	98.5	40.7	22.1	7.2	5.1	36.6	77.2	47.4	7.3	19.0	38.1	18.1	24.1	75.1	56.1	9.3	31.4	13.3	19,780	8,079	3,338	1,814	587	417	1,089	1,588
13	Celtics	1	2007-08	82	240.9	100.5	42.0	22.4	8.5	4.6	36.4	76.7	47.5	7.3	19.1	38.1	20.5	26.5	77.1	56.9	10.1	31.9	14.4	19,755	8,245	3,445	1,833	696	379	1,181	1,864
14	Lakers	1	2008-09	82	241.2	106.9	43.9	23.3	8.8	5.1	40.3	85.1	47.4	6.7	18.5	36.1	19.6	25.5	77.0	55.5	12.4	31.5	13.1	19,780	8,768	3,602	1,908	718	420	1,076	1,698
15	Lakers	1	2009-10	82	241.8	101.7	44.3	21.1	7.5	4.9	38.3	83.8	45.7	6.5	19.0	34.1	18.5	24.2	76.5	53.8	11.9	32.5	13.0	19,830	8,339	3,635	1,730	612	400	1,066	1,592
16	Mavericks	1	2010-11	82	240.3	100.2	41.4	23.8	6.8	4.3	37.4	78.8	47.5	7.9	21.6	36.5	17.5	22.6	77.7	56.5	9.5	31.9	13.5	19,705	8,220	3,398	1,954	557	352	1,107	1,575
17	Heat	1	2011-12	66	243.0	98.5	41.6	20.0	8.9	5.4	37.1	79.0	46.9	5.6	15.6	35.9	18.8	24.2	77.5	54.9	10.4	31.2	14.7	16,040	6,500	2,746	1,317	585	355	971	1,282
18	Heat	1	2012-13	82	242.4	102.9	38.6	23.0	8.7	5.4	38.4	77.4	49.6	8.7	22.1	39.6	17.4	23.0	75.4	58.8	8.2	30.4	13.3	19,880	8,436	3,166	1,890	710	441	1,088	1,533
19	Spurs	1	2013-14	82	240.9	105.4	43.3	25.2	7.4	5.1	40.6	83.5	48.6	8.5	21.4	39.7	15.7	20.0	78.5	57.1	9.3	34.0	14.1	19,755	8,639	3,548	2,064	604	420	1,153	1,495
20	Warriors	1	2014-15	82	240.6	110.0	44.7	27.4	9.3	6.0	41.6	87.0	47.8	10.8	27.0	39.8	16.0	20.8	76.8	57.1	10.4	34.3	14.1	19,730	9,016	3,667	2,248	762	496	1,156	1,628
21	Cavaliers	1	2015-16	82	242.1	104.3	44.5	22.7	6.7	3.9	38.7	84.0	46.0	10.7	29.6	36.2	16.3	21.7	74.8	55.8	10.6	33.9	12.9	19,855	8,555	3,650	1,861	551	317	1,056	1,666
22	Warriors	1	2016-17	82	241.2	115.9	44.4	30.4	9.6	6.8	43.1	87.1	49.5	12.0	31.2	38.3	17.8	22.6	78.8	59.7	9.4	35.0	14.4	19,780	9,503	3,643	2,491	785	555	1,182	1,585
23	Warriors	1	2017-18	82	240.6	113.5	43.5	29.3	8.0	7.5	42.8	85.1	50.3	11.3	28.9	39.1	16.6	20.3	81.5	60.3	8.4	35.1	15.0	19,730	9,304	3,568	2,402	656	612	1,229	1,607
24	Raptors	1	2018-19	82	242.4	114.4	45.2	25.4	8.3	5.3	42.2	89.1	47.4	12.4	33.8	36.6	17.7	22.0	80.4	57.9	9.6	35.6	13.3	19,880	9,384	3,706	2,085	680	437	1,093	1,724
25	Lakers	1	2019-20	71	240.7	113.4	45.7	25.4	8.6	6.6	42.3	88.3	48.0	11.0	31.6	34.9	17.7	24.3	72.9	57.3	10.7	35.1	14.7	17,090	8,054	3,247	1,803	612	468	1,041	1,471