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1901-2011

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Census Years	Population	Decadal growth		Average annual exponential growth rate (percent)	Progressive growth rate over 1901 (percent)
Census Years	Population	Absolute	Percent	Average annual exponential growth rate (percent)	Progressive growth rate over 1901 (percent)
1901	23,83,96,327		-	-	-
1911	25,20,93,390	1,36,97,063	5.75	0.56	5.75
1921	25,13,21,213	-7,22,177	(0.31)	-0.03	5.42
1931	27,89,77,238	2,76,56,025	11.00	1.04	17.02
1941	31,86,60,580	3,96,83,342	14.22	1.33	33.67
1951¹	36,10,88,090	4,24,27,510	13.31	1.25	51.47
1961¹	43,92,34,771	7,81,46,681	21.64	1.96	84.25
1971	54,81,59,652	10,89,24,881	24.80⁶	2.20	129.94
1981²	68,33,29.097	13,51,69,445	24.66⁶	2.22	186.64
1991³	84,64,21,039	16,30,91,942	23.87	2.16	255.05
2001⁴	1,02,87,37,436	18,23,16,397	21.54	1.97	331.52
2011⁵	1,21,01,93,422	18,14,55,986	17.64	1.64	407.64

The population of India: changes, 1901- onwards