how many players averaged 20 points per game before they turned 22

Oscar Robertson had 26.6 points per game before turning 22.

Interpreted as:

How many players averaged 20 or higher points per game before they turned 22 years old?

	NAME	PPG	GP	MPG	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	Oscar Robertson O. Robertson	26.6	20		9.8				9.2						8.2	9.8	83.2						531	195					55
2	Terry Dischinger T. Dischinger	23.6	8						8.3						7.1	8.8	81.4						189						23
3	Rick Barry R. Barry	25.7	80	37.4	10.6	2.2			9.3	21.2	43.9				7.1	8.3	86.2	51.8				2,990	2,059	850	173				297
4	Dave Cowens D. Cowens	21.4	7	40.3	18.4	2.4			8.9	20.6	43.1				3.7	5.0	74.3	47.1				282	150	129	17				24
5	Spencer Haywood S. Haywood	20.6	33		12.0	1.5			7.9	17.5	44.9				4.8	6.6	73.4	50.4					680	396	48				84
6	John Drew J. Drew	20.0	155						7.2						5.7	7.7	73.0						3,102
7	Bernard King B. King	23.9	105						9.9						4.1	6.2	65.9						2,507
8	Mark Aguirre M. Aguirre	23.6	20	33.0	5.7	2.7			9.7	20.1	48.0	0.7			3.6	5.4	66.7	52.4			2.7	659	471	114	54			53	56
9	Isiah Thomas I. Thomas	20.1	153	36.1	3.5	7.8			7.7	17.0	45.3	0.3			4.4	6.2	70.7	51.0				5,524	3,079	537	1,199				571
10	Clark Kellogg C. Kellogg	20.1	81	34.1	10.6	2.8			8.4	17.5	47.9	0.0			3.2	4.3	74.1	51.6				2,763	1,625	860	223				298
11	Terry Cummings T. Cummings	23.7	60	35.9	10.7	2.4			9.7	18.5	52.4	0.0			4.3	6.0	72.0	56.0				2,153	1,419	644	145				259
12	Michael Jordan M. Jordan	27.7	51	37.8	6.4	5.5	2.4	1.0	10.3	19.7	52.0	0.1	0.5	15.4	7.0	8.3	85.3	59.2	1.8	4.6	3.5	1,929	1,411	326	279	123	53	177	188
13	Hakeem Olajuwon H. Olajuwon	20.6	41	34.3	11.7	1.4	1.1	2.5	8.3	15.4	54.1	0.0	0.0		4.0	6.7	58.7	56.2	5.3	6.3	3.1	1,405	844	479	56	46	101	126	175
14	Shaquille O'Neal S. O'Neal	25.5	137	38.6	13.4	2.1	0.8	3.3	10.2	17.5	58.1	0.0	0.0	0.0	5.2	9.3	56.2	59.2	4.3	9.0	3.4	5,284	3,500	1,829	291	115	452	472	520
15	Jamal Mashburn J. Mashburn	20.1	89	36.8	4.5	3.3	1.1	0.2	7.4	17.9	41.6	1.1	3.7	29.5	4.2	6.0	69.2	49.0	1.4	3.1	3.1	3,273	1,790	400	294	97	15	279	239
16	Shareef Abdur-Rahim S. Abdur-Rahim	20.5	162	35.5	7.0	2.4	1.0	1.0	7.4	15.8	47.0	0.2	0.5	35.9	5.5	7.2	76.7	54.1	2.7	4.3	3.0	5,752	3,323	1,136	388	168	155	482	400	-1029
17	Allen Iverson A. Iverson	23.5	76	40.1	4.1	7.5	2.1	0.3	8.2	19.8	41.6	2.0	6.0	34.1	5.0	7.2	70.2	51.3	1.5	2.6	4.4	3,045	1,787	312	567	157	24	337	233	-439
18	Tim Duncan T. Duncan	21.1	82	39.1	11.9	2.7	0.7	2.5	8.6	15.7	54.9	0.0	0.1	0.0	3.9	5.9	66.2	57.7	3.3	8.6	3.4	3,204	1,731	977	224	55	206	279	254	+429
19	Elton Brand E. Brand	20.2	138	38.1	10.3	2.4	0.9	1.7	7.8	16.2	48.0	0.0	0.0	0.0	4.7	6.7	69.5	52.8	4.2	6.1	2.9	5,260	2,788	1,424	330	121	231	397	443	-1027
20	Carmelo Anthony C. Anthony	22.8	237	36.1	5.6	2.7	1.1	0.5	8.1	18.0	44.8	0.6	2.2	28.2	6.1	7.6	79.5	53.4	1.9	3.7	2.9	8,544	5,405	1,318	637	253	113	689	683	+235
21	LeBron James L. James	26.6	266	41.3	6.6	6.5	1.8	0.7	9.6	20.9	46.1	1.3	3.8	33.3	6.1	8.2	74.2	54.3	1.2	5.5	3.3	10,999	7,067	1,763	1,739	471	199	891	534	+393
22	Kevin Durant K. Durant	25.3	236	37.7	6.2	2.7	1.2	0.9	8.7	18.7	46.2	1.2	3.3	36.1	6.8	7.7	88.2	57.1	1.1	5.1	3.1	8,892	5,967	1,453	628	286	212	728	427	-721
23	Blake Griffin B. Griffin	22.3	68	37.8	12.2	3.6	0.7	0.5	8.4	16.6	50.4	0.1	0.3	36.8	5.5	8.5	64.4	54.9	3.5	8.7	2.7	2,569	1,519	832	242	46	36	183	203	-79
24	Kyrie Irving K. Irving	20.8	174	33.8	3.7	5.9	1.3	0.4	7.6	17.0	44.7	1.7	4.5	38.3	3.9	4.6	86.0	54.8	0.7	2.9	3.0	5,880	3,623	636	1,024	232	62	526	406	-551
25	Karl-Anthony Towns K. Towns	21.7	177	34.4	11.4	2.2	0.7	1.5	8.7	16.0	54.2	0.8	2.3	36.0	3.5	4.3	82.7	60.8	3.2	8.2	2.4	6,091	3,839	2,011	396	122	264	420	532	-178