How much did tatum average at age 21?

	NAME	DATE	AGE	TM		OPP	MIN	PTS	REB	AST	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Jayson Tatum J. Tatum	3/3/2019	21	BOS	vs	HOU	35	12	5	2	1	0	5	15	33.3	1	4	25.0	1	2	50.0	37.8	0	5	0	4	-3
2	Jayson Tatum J. Tatum	3/5/2019	21-002	BOS	@	GSW	27	17	5	1	3	2	6	13	46.2	1	3	33.3	4	4	100.0	57.6	0	5	1	2	+4
3	Jayson Tatum J. Tatum	3/6/2019	21-003	BOS	@	SAC	33	24	3	2	1	0	8	17	47.1	2	4	50.0	6	6	100.0	61.1	0	3	2	0	+11
4	Jayson Tatum J. Tatum	3/9/2019	21-006	BOS	@	LAL	27	6	5	5	1	0	2	7	28.6	0	2	0.0	2	2	100.0	38.1	0	5	3	3	+1
5	Jayson Tatum J. Tatum	3/14/2019	21-011	BOS	vs	SAC	29	15	4	3	0	0	7	10	70.0	0	2	0.0	1	1	100.0	71.8	0	4	2	4	-5
6	Jayson Tatum J. Tatum	3/16/2019	21-013	BOS	vs	ATL	33	18	8	4	1	0	7	15	46.7	0	2	0.0	4	4	100.0	53.7	1	7	2	1	0
7	Jayson Tatum J. Tatum	3/18/2019	21-015	BOS	vs	DEN	36	8	7	6	1	1	3	12	25.0	1	5	20.0	1	2	50.0	31.1	0	7	1	1	-9
8	Jayson Tatum J. Tatum	3/20/2019	21-017	BOS	@	PHI	33	13	6	4	0	1	6	12	50.0	1	2	50.0	0	0		54.2	1	5	1	3	-17
9	Jayson Tatum J. Tatum	3/23/2019	21-020	BOS	@	CHA	37	12	6	4	0	1	5	17	29.4	2	7	28.6	0	0		35.3	1	5	1	1	-19
10	Jayson Tatum J. Tatum	3/26/2019	21-023	BOS	@	CLE	34	21	5	4	1	0	9	17	52.9	3	5	60.0	0	0		61.8	2	3	1	4	+17
11	Jayson Tatum J. Tatum	3/29/2019	21-026	BOS	vs	IND	24	11	5	4	0	0	3	6	50.0	3	3	100.0	2	4	50.0	70.9	0	5	4	2	+16
12	Jayson Tatum J. Tatum	3/30/2019	21-027	BOS	@	BKN	30	9	2	3	1	0	4	9	44.4	1	1	100.0	0	0		50.0	1	1	2	4	-12
13	Jayson Tatum J. Tatum	4/1/2019	21-029	BOS	vs	MIA	34	19	6	5	1	0	7	15	46.7	4	7	57.1	1	2	50.0	59.8	1	5	0	0	+15
14	Jayson Tatum J. Tatum	4/3/2019	21-031	BOS	@	MIA	39	16	7	3	1	1	6	17	35.3	1	3	33.3	3	4	75.0	42.6	0	7	3	0	+16
15	Jayson Tatum J. Tatum	4/5/2019	21-033	BOS	@	IND	34	22	7	2	3	1	9	19	47.4	1	5	20.0	3	4	75.0	53.0	1	6	1	2	+15
16	Jayson Tatum J. Tatum	4/7/2019	21-035	BOS	vs	ORL	6	0	1	0	0	0	0	2	0.0	0	0		0	0		0.0	0	1	0	0	+1
17	Jayson Tatum J. Tatum	10/23/2019	21-234	BOS	@	PHI	37	21	10	2	2	0	8	22	36.4	4	8	50.0	1	3	33.3	45.0	1	9	4	2	-4
18	Jayson Tatum J. Tatum	10/25/2019	21-236	BOS	vs	TOR	35	25	9	4	3	0	8	22	36.4	4	7	57.1	5	5	100.0	51.7	3	6	0	0	+9
19	Jayson Tatum J. Tatum	10/26/2019	21-237	BOS	@	NYK	34	15	9	0	3	2	5	17	29.4	2	7	28.6	3	4	75.0	40.0	2	7	2	3	+20
20	Jayson Tatum J. Tatum	10/30/2019	21-241	BOS	vs	MIL	39	25	4	2	0	1	10	22	45.5	4	7	57.1	1	2	50.0	54.6	1	3	1	5	+16
21	Jayson Tatum J. Tatum	11/1/2019	21-243	BOS	vs	NYK	34	24	6	3	0	0	9	17	52.9	4	8	50.0	2	2	100.0	67.1	1	5	2	4	+12
22	Jayson Tatum J. Tatum	11/5/2019	21-247	BOS	@	CLE	34	18	7	1	1	2	9	16	56.3	0	5	0.0	0	0		56.3	0	7	4	1	+9
23	Jayson Tatum J. Tatum	11/7/2019	21-249	BOS	@	CHA	29	23	9	1	2	1	8	17	47.1	4	6	66.7	3	4	75.0	61.3	2	7	1	0	+13
24	Jayson Tatum J. Tatum	11/9/2019	21-251	BOS	@	SAS	34	19	7	4	3	0	6	13	46.2	2	6	33.3	5	6	83.3	60.7	1	6	2	3	+23
25	Jayson Tatum J. Tatum	11/11/2019	21-253	BOS	vs	DAL	35	5	8	4	1	0	1	18	5.6	0	3	0.0	3	4	75.0	12.7	3	5	1	3	+16
	Average						33.6	21.3	6.7	3.0	1.2	0.8	7.7	17.3	44.7	2.5	6.3	39.4	3.4	4.2	81.4	55.7	0.9	5.8	2.1	2.0	6.5
	Total						2,387	1,514	473	212	88	58	549	1,229	44.7	175	444	39.4	241	296	81.4	55.7	64	409	146	144	+463