Stephen Curry had a 21.9 usage percentage in his rookie season in 2009-10.

NAME	USG%	SEASON	TM	GP	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Stephen Curry	21.9	2009-10	GSW	80	36.2	17.5	4.5	5.9	1.9	0.2	3.0	6.6	14.3	46.2	2.1	4.8	43.7	2.2	2.5	88.5	2,896	1,399	356	472	152	19	243	252	-186
Stephen Curry	24.5	2010-11	GSW	74	33.6	18.6	3.9	5.8	1.5	0.3	3.1	6.8	14.2	48.0	2.0	4.6	44.2	2.9	3.1	93.4	2,489	1,373	286	432	109	20	226	233	-17
Stephen Curry	24.1	2011-12	GSW	26	28.2	14.7	3.4	5.3	1.5	0.3	2.5	5.6	11.4	49.0	2.1	4.7	45.5	1.5	1.8	80.9	732	383	88	138	39	8	65	62	+79
Stephen Curry	26.4	2012-13	GSW	78	38.2	22.9	4.0	6.9	1.6	0.2	3.1	8.0	17.8	45.1	3.5	7.7	45.3	3.4	3.7	90.0	2,983	1,786	314	539	126	12	240	198	+135
Stephen Curry	28.3	2013-14	GSW	78	36.5	24.0	4.3	8.5	1.6	0.2	3.8	8.4	17.7	47.1	3.3	7.9	42.4	3.9	4.5	88.5	2,846	1,873	334	666	128	14	294	194	+573
Stephen Curry	28.9	2014-15	GSW	80	32.7	23.8	4.3	7.7	2.0	0.2	3.1	8.2	16.8	48.7	3.6	8.1	44.3	3.9	4.2	91.4	2,613	1,900	341	619	163	16	249	158	+920
Stephen Curry	32.6	2015-16	GSW	79	34.2	30.1	5.4	6.7	2.1	0.2	3.3	10.2	20.2	50.4	5.1	11.2	45.4	4.6	5.1	90.8	2,700	2,375	430	527	169	15	262	161	+1022
Stephen Curry	30.1	2016-17	GSW	79	33.4	25.3	4.5	6.6	1.8	0.2	3.0	8.5	18.3	46.8	4.1	10.0	41.1	4.1	4.6	89.8	2,639	1,999	353	524	142	17	239	183	+1015
Stephen Curry	30.9	2017-18	GSW	51	32.0	26.4	5.1	6.1	1.6	0.2	3.0	8.4	16.9	49.5	4.2	9.8	42.3	5.5	5.9	92.1	1,631	1,346	261	310	80	8	153	114	+485
Stephen Curry	30.4	2018-19	GSW	69	33.8	27.3	5.3	5.2	1.3	0.4	2.8	9.2	19.4	47.2	5.1	11.7	43.7	3.8	4.2	91.6	2,331	1,881	369	361	92	25	192	166	+689
Stephen Curry	33.6	2019-20	GSW	5	27.8	20.8	5.2	6.6	1.0	0.4	3.2	6.6	16.4	40.2	2.4	9.8	24.5	5.2	5.2	100.0	139	104	26	33	5	2	16	11	-43
Stephen Curry	34.7	2020-21	GSW	63	34.2	32.0	5.5	5.8	1.2	0.1	3.4	10.4	21.7	48.2	5.3	12.7	42.1	5.7	6.3	91.6	2,152	2,015	345	363	77	8	213	119	+242
Stephen Curry	30.8	2021-22	GSW	64	34.5	25.5	5.2	6.3	1.3	0.4	3.2	8.4	19.1	43.7	4.5	11.7	38.0	4.3	4.7	92.3	2,211	1,630	335	404	85	23	206	130	+507
Stephen Curry	31.0	2022-23	GSW	56	34.7	29.4	6.1	6.3	0.9	0.4	3.2	10.0	20.2	49.3	4.9	11.4	42.7	4.6	5.0	91.5	1,941	1,648	341	352	52	20	179	117	+268
Stephen Curry	31.3	2023-24	GSW	74	32.7	26.4	4.5	5.1	0.7	0.4	2.8	8.8	19.5	45.0	4.8	11.8	40.8	4.0	4.4	92.3	2,421	1,956	330	379	54	28	210	117	+189