what is the average career length of an nba player

John Abramovic had 9.5 points per game in his career.

	NAME	PPG	GP	RPG	APG	FGM	FGA	FG%	FTM	FTA	FT%	TS%	PTS	REB	AST	PF
1	John Abramovic J. Abramovic	9.5	56		0.7	3.6	15.3	23.7	2.3	3.3	68.6	28.5	533		37	171
2	Chet Aubuchon C. Aubuchon	2.2	30		0.7	0.8	3.0	25.3	0.6	1.2	54.3	30.5	65		20	46
3	Norm Baker N. Baker	0.0	4		0.0	0.0	0.3	0.0	0.0	0.0		0.0	0		0	0
4	Herschel Baltimore H. Baltimore	2.4	58		0.3	0.9	4.5	20.2	0.6	1.2	46.4	23.5	138		16	98
5	John Barr J. Barr	5.1	58		0.9	2.1	7.6	28.3	0.8	1.4	59.5	31.2	295		54	164
6	Frankie Baumholtz F. Baumholtz	14.0	45		1.2	5.7	19.0	29.8	2.7	3.5	77.6	34.1	631		54	93
7	Moe Becker M. Becker	3.8	43		0.7	1.6	8.3	19.6	0.5	1.0	50.0	21.5	162		30	98
8	Hank Beenders H. Beenders	8.4	111		0.5	3.1	11.8	26.5	2.2	3.1	68.7	31.9	935		53	304
9	Hank Biasatti H. Biasatti	1.0	6		0.0	0.3	0.8	40.0	0.3	0.7	50.0	44.4	6		0	3
10	Al Brightman A. Brightman	9.8	58		1.0	3.8	15.0	25.6	2.1	3.3	62.7	29.7	567		60	115
11	Aud Brindley A. Brindley	2.8	12		0.1	1.2	4.1	28.6	0.5	0.6	85.7	32.6	34		1	16
12	Harold Brown H. Brown	4.9	54		0.7	1.8	7.1	24.8	1.4	2.2	63.2	30.4	264		39	122
13	Leon Brown L. Brown	0.0	5		0.0	0.0	0.6	0.0	0.0	0.0		0.0	0		0	2
14	Tommy Byrnes T. Byrnes	6.5	264	1.5	1.2	2.5	8.3	29.9	1.5	2.3	64.8	34.8	1,708	71	311	387
15	Michael Bytzura M. Bytzura	3.5	60		0.5	1.5	5.9	24.4	0.6	1.2	50.0	27.1	210		31	108
16	Tom Callahan T. Callahan	1.3	13		0.3	0.5	2.2	20.7	0.4	0.9	41.7	24.8	17		4	9
17	Ernie Calverley E. Calverley	11.9	165		3.5	4.6	16.0	29.1	2.6	3.7	70.7	33.8	1,961		572	542
18	Chet Carlisle C. Carlisle	5.0	51		0.3	2.0	7.3	26.8	1.1	1.8	60.9	31.0	256		17	136
19	Don Carlson D. Carlson	8.0	180	1.7	1.8	3.3	10.1	33.0	1.4	2.2	62.3	36.4	1,447	15	324	511
20	Bob Cluggish B. Cluggish	4.4	54		0.4	1.7	6.6	26.1	1.0	1.7	57.1	30.0	238		22	113
21	Chuck Connors C. Connors	4.5	53		0.8	1.9	7.4	25.2	0.8	1.6	47.1	27.7	239		41	134
22	Ken Corley K. Corley	0.0	3		0.0	0.0	0.0		0.0	0.0			0		0	0
23	Hal Crisler H. Crisler	1.5	4		0.0	0.5	1.5	33.3	0.5	0.5	100.0	43.6	6		0	6
24	Armand Cure A. Cure	0.8	12		0.0	0.3	1.3	26.7	0.2	0.3	66.7	30.6	10		0	5
25	Howie Dallmar H. Dallmar	9.6	146		2.3	3.6	12.6	28.3	2.5	3.6	69.8	34.1	1,408		340	386