ageing population

	A	B	C	D	E	F	G	H	J	N	O
1	Period	adult-years in period (bi) / year	years within period	adult-years in period (bi)	Child mortality	Births within period (bi)	Life Exp.	Life-years in period (bi)	Surving adults within period (bi)	Life-years lived	Ever born at start

2	190,000-50,000BC	0.0	140000	140	50%	8	36	280	4	8%
3	50,000-8,000BC	0.0	42000	19	50%	1	35	38	1	9%
4	8,000 BC-1AD	0.1	8000	605	50%	46	26	1210	23	42%	0%
5	1-1200	0.3	1200	372	50%	27	28	745	13	62%	1%
6	1200-1650	0.4	450	191	50%	13	30	381	6	72%	1%
7	1650-1750	0.6	100	55	50%	3	35	110	2	75%	1%
8	1750-1850	0.6	100	62	50%	4	31	124	2	79%	1%
9	1850-1900	0.9	50	44	50%	3	30	88	1	81%	1%
10	1900-1950	1.4	50	68	50%	3	40	136	2	85%	2%
11	1950-1995	5.3	45	237	25%	5	59	316	4	94%	2%
12	1995-2011	8.9	15	134	5%	2	67	141	2	97%	5%
13	2011-2020	9.2	10	92	1%	1	71	93	1	100%	6%
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16	Total					117		3666
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18	https://whatweowethefuture.com/wp-content/uploads/2023/06/The-scope-of-human-experience.pdf
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