<Tr> <Td> 13 </Td> <Td> 1910 </Td> <Td> April 15, 1910 </Td> <Td> 92,228,496 </Td> <Td> </Td> </Tr> <Tr> <Td> 14 </Td> <Td> 1920 </Td> <Td> January 1, 1920 </Td> <Td> 106,021,537 </Td> <Td> This was the first census that recorded a population exceeding 100 million . </Td> </Tr> <Tr> <Td> 15 </Td> <Td> 1930 </Td> <Td> April 1, 1930 </Td> <Td> 122,775,046 </Td> <Td> </Td> </Tr> <Tr> <Td> 16 </Td> <Td> 1940 </Td> <Td> April 1, 1940 </Td> <Td> 132,164,569 </Td> <Td> This is the most recent Census where individuals' data has now been released to the public (by the 72 - year rule .). </Td> </Tr>

What is a census and why is it to be taken according to the constitution