how old was bill russel when he got 11 rings

How old was bill russel when he got 11 or more rings?

Interpreted as:

	NAME	AGE	CHAMPS	SEASON	TM	GP	MPG	PPG	RPG	APG	FGM	FGA	FG%	FTM	FTA	FT%	TS%	MIN	PTS	REB	AST	PF
1	Bill Russell B. Russell	22	1	1956-57	BOS	48	35.3	14.7	19.6	1.8	5.8	13.5	42.7	3.2	6.4	49.2	45.0	1,695	706	943	88	143
2	Bill Russell B. Russell	23	0	1957-58	BOS	69	38.3	16.6	22.7	2.9	6.6	15.0	44.2	3.3	6.4	51.9	46.5	2,640	1,142	1,564	202	181
3	Bill Russell B. Russell	24	1	1958-59	BOS	70	42.6	16.7	23.0	3.2	6.5	14.2	45.7	3.7	6.1	59.8	49.3	2,979	1,168	1,612	222	161
4	Bill Russell B. Russell	25	1	1959-60	BOS	74	42.5	18.2	24.0	3.7	7.5	16.1	46.7	3.2	5.3	61.2	49.6	3,146	1,350	1,778	277	210
5	Bill Russell B. Russell	26	1	1960-61	BOS	78	44.3	16.9	23.9	3.4	6.8	16.0	42.6	3.3	6.0	55.0	45.4	3,458	1,322	1,868	268	155
6	Bill Russell B. Russell	27	1	1961-62	BOS	76	45.2	18.9	23.6	4.5	7.6	16.6	45.7	3.8	6.3	59.5	48.9	3,433	1,436	1,790	341	207
7	Bill Russell B. Russell	28	1	1962-63	BOS	78	44.9	16.8	23.6	4.5	6.6	15.2	43.2	3.7	6.6	55.5	46.4	3,500	1,309	1,843	348	189
8	Bill Russell B. Russell	29	1	1963-64	BOS	78	44.6	15.0	24.7	4.7	6.0	13.8	43.3	3.0	5.5	55.0	46.1	3,482	1,168	1,930	370	190
9	Bill Russell B. Russell	30	1	1964-65	BOS	78	44.4	14.1	24.1	5.3	5.5	12.6	43.8	3.1	5.5	57.3	47.2	3,466	1,102	1,878	410	204
10	Bill Russell B. Russell	31	1	1965-66	BOS	78	43.4	12.9	22.8	4.8	5.0	12.1	41.5	2.9	5.2	55.1	44.8	3,386	1,005	1,779	371	221
11	Bill Russell B. Russell	32	0	1966-67	BOS	81	40.7	13.3	21.0	5.8	4.9	10.7	45.4	3.5	5.8	61.0	50.0	3,297	1,075	1,700	472	258
12	Bill Russell B. Russell	33	1	1967-68	BOS	78	37.9	12.5	18.6	4.6	4.7	11.0	42.5	3.2	5.9	53.7	46.1	2,953	977	1,451	357	242
13	Bill Russell B. Russell	34	1	1968-69	BOS	77	42.7	9.9	19.3	4.9	3.6	8.4	43.3	2.6	5.0	52.6	46.7	3,291	762	1,484	374	231
	Average		0.8			74.1	42.3	15.1	22.5	4.3	5.9	13.4	44.0	3.3	5.8	56.1	47.1	3132.8	1117.1	1663.1	315.4	199.4
	Total		11			963	42.3	15.1	22.5	4.3	5.9	13.4	44.0	3.3	5.8	56.1	47.1	40,726	14,522	21,620	4,100	2,592