how many nba championships do the portland trail blazers have

The Portland Trail Blazers have won 1 championship all-time.

	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	Trail Blazers	0	1970-71	82	240.9	115.5	51.3	27.2			45.4	104.4	43.5				24.7	32.6	75.8	48.6				19,755	9,467	4,210	2,227				2,024
2	Trail Blazers	0	1971-72	82	241.5	106.8	48.7	25.5			42.2	95.6	44.2				22.4	30.4	73.6	49.0				19,805	8,759	3,996	2,090				1,873
3	Trail Blazers	0	1972-73	82	240.6	106.2	47.9	25.6			43.8	95.6	45.8				18.7	26.0	71.9	49.6				19,730	8,707	3,928	2,102				1,970
4	Trail Blazers	0	1973-74	82	240.6	106.8	47.0	25.7	9.7	4.2	43.7	93.7	46.7				19.4	25.8	75.3	50.9	15.3	31.7	22.2	19,730	8,761	3,852	2,106	797	342	1,823	2,050
5	Trail Blazers	0	1974-75	82	242.4	103.8	46.4	26.9	9.2	4.9	41.6	86.7	48.0				20.5	27.6	74.2	52.5	12.8	33.6	22.4	19,880	8,508	3,807	2,209	755	399	1,833	2,055
6	Trail Blazers	0	1975-76	82	240.6	104.1	48.3	25.5	9.5	5.0	41.7	88.9	46.9				20.7	28.7	72.3	51.2	13.6	34.7	22.8	19,730	8,533	3,959	2,094	776	408	1,867	2,091
7	Trail Blazers	1	1976-77	82	240.6	111.7	48.3	24.3	10.6	6.0	44.2	91.9	48.1				23.4	30.7	76.2	53.0	15.4	33.0	21.4	19,730	9,163	3,963	1,990	868	492	1,757	2,220
8	Trail Blazers	0	1977-78	82	240.6	107.7	47.2	25.2	9.7	4.8	43.4	89.8	48.3				20.9	27.5	76.0	52.8	14.5	32.8	19.8	19,730	8,829	3,873	2,067	798	390	1,625	2,068
9	Trail Blazers	0	1978-79	82	241.2	108.4	45.0	23.7	9.5	6.2	43.2	89.5	48.3				22.0	28.8	76.5	53.0	15.3	29.7	20.2	19,780	8,888	3,691	1,946	776	512	1,658	2,187
10	Trail Blazers	0	1979-80	82	241.2	102.5	45.2	23.1	8.6	5.8	41.6	87.4	47.6	0.3	1.6	19.7	19.0	25.6	74.3	51.9	15.8	29.4	18.9	19,780	8,402	3,703	1,898	708	472	1,552	1,956
11	Trail Blazers	0	1980-81	82	242.1	110.7	44.3	27.4	9.4	5.9	45.6	91.9	49.6	0.3	1.8	16.9	19.2	26.7	71.8	53.4	15.2	29.1	18.5	19,855	9,080	3,631	2,244	769	480	1,518	2,034
12	Trail Blazers	0	1981-82	82	241.2	109.8	42.6	25.0	8.6	4.5	44.3	87.6	50.5	0.4	1.7	20.7	21.0	29.1	72.0	54.7	13.9	28.7	17.0	19,780	9,006	3,497	2,054	706	367	1,390	2,012
13	Trail Blazers	0	1982-83	82	240.9	107.4	43.4	24.8	9.1	4.7	42.2	86.9	48.6	0.4	1.8	23.3	22.6	30.6	73.8	53.5	14.4	29.0	18.2	19,755	8,808	3,560	2,030	749	384	1,495	1,960
14	Trail Blazers	0	1983-84	82	241.5	113.1	42.0	25.4	9.9	4.8	44.3	87.7	50.5	0.3	1.6	19.4	24.2	32.2	75.4	55.6	15.3	26.8	18.1	19,805	9,277	3,445	2,082	814	397	1,483	2,134
15	Trail Blazers	0	1984-85	82	242.4	115.5	42.7	27.1	10.0	6.3	45.2	89.9	50.3	0.6	2.5	25.2	24.4	32.5	75.1	55.4	14.7	28.0	18.1	19,880	9,469	3,500	2,225	821	516	1,481	1,957
16	Trail Blazers	0	1985-86	82	242.1	115.1	42.3	26.6	10.5	4.3	44.0	88.8	49.6	0.9	3.4	26.9	26.1	34.1	76.5	55.4	14.1	28.2	18.6	19,855	9,436	3,469	2,180	859	356	1,529	2,205
17	Trail Blazers	0	1986-87	82	241.5	117.9	43.8	28.8	9.4	4.7	44.5	88.4	50.4	1.2	4.1	28.9	27.7	35.7	77.5	56.6	14.4	29.4	18.9	19,805	9,667	3,593	2,359	767	387	1,546	2,082
18	Trail Blazers	0	1987-88	82	240.6	116.1	45.6	28.1	8.9	4.2	44.6	91.0	49.1	1.4	4.6	30.8	25.4	32.9	77.0	55.0	15.3	30.4	16.5	19,730	9,518	3,742	2,307	726	347	1,351	2,091
19	Trail Blazers	0	1988-89	82	241.8	114.6	45.9	27.0	10.1	4.7	45.1	95.1	47.4	2.6	7.9	33.5	21.8	29.5	74.0	53.0	16.9	29.0	17.5	19,830	9,395	3,765	2,212	828	388	1,435	2,026
20	Trail Blazers	0	1989-90	82	242.4	114.2	47.6	25.4	9.1	4.4	43.6	92.0	47.3	2.3	6.9	33.6	24.8	33.3	74.3	53.5	16.5	31.1	16.5	19,880	9,365	3,907	2,085	749	364	1,356	2,048
21	Trail Blazers	0	1990-91	82	242.7	114.7	45.9	27.5	8.8	5.0	43.6	89.9	48.5	4.2	11.0	37.7	23.3	31.0	75.3	55.4	14.7	31.2	16.0	19,905	9,407	3,763	2,254	724	410	1,309	1,975
22	Trail Blazers	0	1991-92	82	242.4	111.4	46.9	25.2	9.2	5.0	42.4	89.7	47.3	4.0	11.5	34.4	22.7	30.0	75.4	54.1	15.8	31.1	16.2	19,880	9,135	3,843	2,065	753	410	1,328	1,983
23	Trail Blazers	0	1992-93	82	242.7	108.5	45.5	24.0	9.4	5.2	41.0	89.5	45.8	3.4	10.3	32.6	23.2	31.1	74.5	52.6	15.0	30.6	14.8	19,905	8,898	3,733	1,969	770	425	1,215	1,892
24	Trail Blazers	0	1993-94	82	240.9	107.3	45.9	25.2	9.1	5.0	41.1	90.6	45.4	3.3	9.4	35.3	21.7	29.2	74.3	51.8	15.9	30.0	14.8	19,755	8,795	3,762	2,070	744	409	1,210	1,827
25	Trail Blazers	0	1994-95	82	240.3	103.1	46.3	22.5	8.1	5.7	39.2	87.0	45.1	5.6	15.4	36.5	19.0	27.2	69.7	52.1	16.5	29.8	14.8	19,705	8,451	3,795	1,846	668	467	1,212	2,024
	Average	0.0		80.8	241.7	105.3	44.2	23.5	8.1	5.0	40.2	86.5	46.5	5.9	16.6	35.5	19.9	26.4	75.5	53.6	13.1	30.8		19525.6	8505.5	3572.7	1901.1	656.4	401.9		1821.4
	Total	1		4,444	241.7	105.3	44.2	23.5	8.1	5.0	40.2	86.5	46.5	5.9	16.6	35.5	19.9	26.4	75.5	53.6	13.1	30.8		1,073,910	467,800	196,497	104,563	34,131	20,901		100,178