how many finals have teams from the west won in the last 20 years

The San Antonio Spurs won once in the Western Conference in the 2007 NBA Finals.

Interpreted as:

How many finals have teams from the west won in a season in the last 20 years?

	TEAM	SERIES W	SEASON	SERIES	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	Spurs	1	2006-07	NBA Finals	4	240.0	86.5	43.8	16.8	6.0	3.8	32.0	72.0	44.4	7.3	19.5	37.2	15.3	23.0	66.3	52.7	10.8	33.0	13.0	960	346	175	67	24	15	52	72
2	Lakers	1	2008-09	NBA Finals	5	250.0	100.6	40.6	16.4	7.2	5.2	38.0	83.2	45.7	6.4	17.2	37.2	18.2	24.0	75.8	53.6	10.6	30.0	10.0	1,250	503	203	82	36	26	50	121
3	Lakers	1	2009-10	NBA Finals	7	240.0	90.6	42.4	14.6	7.3	6.1	31.9	76.3	41.8	5.0	17.9	28.0	21.9	28.6	76.5	51.0	13.1	29.3	12.4	1,680	634	297	102	51	43	87	156
4	Mavericks	1	2010-11	NBA Finals	6	240.0	94.7	37.7	18.2	7.2	4.0	33.0	72.7	45.4	8.5	20.7	41.1	20.2	25.8	78.1	56.3	9.2	28.5	13.2	1,440	568	226	109	43	24	79	118
5	Spurs	1	2013-14	NBA Finals	5	240.0	105.6	37.8	25.4	8.0	3.4	38.2	72.4	52.8	11.0	23.6	46.6	18.2	24.4	74.6	63.5	7.8	30.0	13.4	1,200	528	189	127	40	17	67	99
6	Warriors	1	2014-15	NBA Finals	6	248.3	100.7	44.2	23.0	8.0	5.0	36.2	83.0	43.6	11.2	31.0	36.0	17.2	24.8	69.1	53.6	10.5	33.7	12.7	1,490	604	265	138	48	30	76	145
7	Warriors	1	2016-17	NBA Finals	5	240.0	121.6	45.8	29.4	7.6	4.4	43.2	91.0	47.5	14.2	37.2	38.2	21.0	25.6	82.0	59.5	12.2	33.6	13.4	1,200	608	229	147	38	22	67	122
8	Warriors	1	2017-18	NBA Finals	4	246.3	116.0	40.0	27.8	6.5	8.0	43.5	84.8	51.3	12.8	34.0	37.5	16.3	19.0	85.5	62.3	6.8	33.3	9.3	985	464	160	111	26	32	37	87
9	Lakers	1	2019-20	NBA Finals	6	240.0	110.0	45.0	25.0	6.8	4.3	39.5	85.0	46.5	14.0	39.8	35.1	17.0	21.5	79.1	58.2	11.7	33.3	13.7	1,440	660	270	150	41	26	82	124
10	Warriors	1	2021-22	NBA Finals	6	240.0	104.8	41.7	23.5	10.3	4.5	38.8	87.2	44.6	15.3	41.8	36.7	11.8	14.7	80.7	56.0	9.8	31.8	13.2	1,440	629	250	141	62	27	79	125
11	Nuggets	1	2022-23	NBA Finals	5	240.0	104.6	46.4	25.4	6.2	5.0	39.4	79.4	49.6	8.6	25.8	33.3	17.2	22.6	76.1	58.5	8.8	37.6	11.2	1,200	523	232	127	31	25	56	78
12	Thunder	1	2024-25	NBA Finals	7	240.0	109.3	41.9	17.6	10.7	5.9	37.0	84.6	43.8	10.1	29.4	34.5	25.1	30.6	82.2	55.7	11.1	30.7	12.6	1,680	765	293	123	75	41	88	152