how many players had a usage rate of 30+ in 201/

Wayman Britt had a 30.4 usage percentage in his career.

	NAME	USG%	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	Wayman Britt W. Britt	30.4	7	2.3	1.3	0.6	0.3	0.1	0.0	0.4	1.4	30.0				0.4	0.6	75.0	38.3	0.1	0.4	0.1	16	9	4	2	1	0	1	3
2	John Drew J. Drew	30.7	510	28.4	20.4	5.7	1.6	1.3	0.2	7.2	15.4	46.9	0.0	0.2	17.5	5.9	7.8	75.8	54.1	2.4	3.3	2.7	14,500	10,399	2,917	803	645	95	1,402	1,831
3	George Gervin G. Gervin	30.7	709	33.6	26.5	4.4	2.8	1.2	0.8	10.3	20.3	50.8	0.1	0.5	29.7	5.8	6.8	84.5	56.8	1.5	3.0	3.0	23,831	18,813	3,153	1,976	836	566	2,137	2,045
4	Freeman Williams F. Williams	31.3	323	20.5	14.7	1.6	1.6	0.8	0.1	6.1	13.0	46.7	0.5	1.5	33.1	2.1	2.6	82.4	51.9	0.8	0.8	1.8	6,606	4,738	510	516	247	18	568	533
5	Lewis Brown L. Brown	48.6	2	2.5	1.0	1.0	0.0	0.0	0.0	0.0	1.5	0.0	0.0	0.0		1.0	2.5	40.0	19.2	0.5	0.5	0.5	5	2	2	0	0	0	1	2
6	Mike Niles M. Niles	30.3	44	5.3	2.6	1.3	0.3	0.2	0.0	1.1	3.1	34.8	0.0	0.1	50.0	0.4	0.8	45.9	37.3	0.6	0.7	0.6	231	115	58	15	8	1	25	41
7	Myles Patrick M. Patrick	30.6	3	3.0	1.7	0.7	0.3	0.0	0.0	0.7	1.7	40.0	0.0	0.0		0.3	0.7	50.0	42.5	0.3	0.3	0.3	9	5	2	1	0	0	1	3
8	Ronnie Valentine R. Valentine	37.1	24	5.1	3.5	1.3	0.3	0.3	0.2	1.5	4.1	37.8	0.0	0.1	50.0	0.4	0.8	47.4	39.5	0.4	0.8	0.7	123	84	30	7	7	4	16	23
9	John McCullough J. McCullough	32.6	8	2.9	2.6	0.5	0.4	0.3	0.0	1.1	1.6	69.2	0.0	0.0		0.4	0.6	60.0	69.1	0.1	0.4	0.4	23	21	4	3	2	0	3	3
10	Oliver Robinson O. Robinson	35.0	35	4.2	2.9	0.5	0.6	0.1	0.1	1.0	2.8	36.1	0.0	0.3	9.1	0.9	1.3	66.7	43.2	0.2	0.3	0.4	147	101	17	21	4	2	13	18
11	Dominique Wilkins D. Wilkins	30.2	1,074	35.5	24.8	6.7	2.5	1.3	0.6	9.3	20.1	46.1	0.7	2.1	31.9	5.6	6.9	81.1	53.6	2.7	3.9	2.5	38,113	26,668	7,169	2,677	1,378	642	2,669	2,061	-392
12	Butch Graves B. Graves	33.2	4	2.8	1.3	0.5	0.3	0.3	0.0	0.5	1.5	33.3	0.0	0.3	0.0	0.3	1.3	20.0	30.5	0.0	0.5	0.3	11	5	2	1	1	0	1	4
13	Michael Jordan M. Jordan	33.2	1,072	38.3	30.1	6.2	5.3	2.3	0.8	11.4	22.9	49.7	0.5	1.7	32.7	6.8	8.2	83.5	56.9	1.6	4.7	2.7	41,011	32,292	6,672	5,633	2,514	893	2,924	2,783	+1438
14	John Schweitz J. Schweitz	34.3	22	5.3	2.6	1.0	0.8	0.0	0.0	1.1	3.4	33.3	0.0	0.2	0.0	0.3	0.5	70.0	35.9	0.3	0.7	0.7	117	57	22	18	0	1	16	14
15	Ron Crevier R. Crevier	37.6	3	1.3	0.0	0.3	0.0	0.0	0.0	0.0	1.0	0.0	0.0	0.0		0.0	0.7	0.0	0.0	0.3	0.0	0.0	4	0	1	0	0	0	0	2
16	Voise Winters V. Winters	35.9	4	4.3	1.5	0.8	0.0	0.3	0.0	0.8	3.3	23.1	0.0	0.3	0.0	0.0	0.0		23.1	0.3	0.5	0.5	17	6	3	0	1	0	2	1
17	Cedric Henderson C. Henderson	34.2	8	2.0	1.4	1.0	0.0	0.0	0.0	0.5	1.0	50.0	0.0	0.0		0.4	0.4	100.0	59.0	0.4	0.6	0.5	16	11	8	0	0	0	4	2
18	Myron Jackson M. Jackson	32.2	8	2.8	1.4	0.4	0.8	0.1	0.0	0.3	1.1	22.2	0.0	0.0		0.9	1.0	87.5	43.9	0.1	0.3	0.6	22	11	3	6	1	0	5	1
19	Forrest McKenzie F. McKenzie	30.7	6	7.0	2.8	1.2	0.2	0.2	0.0	1.2	4.7	25.0	0.2	0.3	50.0	0.3	0.3	100.0	29.4	0.3	0.8	0.5	42	17	7	1	1	0	3	9
20	Dwayne Polee D. Polee	33.5	1	6.0	2.0	0.0	0.0	1.0	0.0	1.0	4.0	25.0	0.0	3.0	0.0	0.0	0.0		25.0	0.0	0.0	1.0	6	2	0	0	1	0	1	3
21	Ron Rowan R. Rowan	33.8	7	2.3	1.7	0.1	0.1	0.6	0.0	0.6	1.3	44.4	0.1	0.1	100.0	0.4	0.6	75.0	55.8	0.1	0.0	0.4	16	12	1	1	4	0	3	1
22	Mike Champion M. Champion	40.2	2	2.0	0.0	0.0	0.0	0.0	0.0	0.0	1.5	0.0	0.0	0.5	0.0	0.0	0.0		0.0	0.0	0.0	0.5	4	0	0	0	0	0	1	2
23	Fennis Dembo F. Dembo	31.0	31	2.4	1.2	0.7	0.2	0.0	0.0	0.5	1.4	33.3	0.0	0.1	0.0	0.3	0.3	80.0	38.8	0.3	0.5	0.2	74	36	23	5	1	0	7	15
24	Rolando Ferreira R. Ferreira	31.1	12	2.8	0.8	1.1	0.1	0.0	0.1	0.1	1.5	5.6	0.0	0.0		0.6	0.7	87.5	20.9	0.3	0.8	0.5	34	9	13	1	0	1	6	7
25	Barry Sumpter B. Sumpter	39.8	1	1.0	0.0	0.0	0.0	0.0	0.0	0.0	1.0	0.0	0.0	0.0		0.0	0.0		0.0	0.0	0.0	0.0	1	0	0	0	0	0	0	0