<P> Source: US Department of Homeland Security, Office of Immigration Statistics </P> <P> Top 10 sending countries in 2015 and 2016 </P> <Table> <Tr> <Th> Country </Th> <Th> 2015 </Th> <Th> 2016 </Th> </Tr> <Tr> <Td> 1 . Mexico </Td> <Td> 158,619 </Td> <Td> 174,534 </Td> </Tr> <Tr> <Td> 2 . China </Td> <Td> 74,558 </Td> <Td> 81,772 </Td> </Tr> <Tr> <Td> 3 . Cuba </Td> <Td> 54,396 </Td> <Td> 66,516 </Td> </Tr> <Tr> <Td> 4 . India </Td> <Td> 64,116 </Td> <Td> 64,687 </Td> </Tr> <Tr> <Td> 5 . Dominican Rep . </Td> <Td> 50,610 </Td> <Td> 61,161 </Td> </Tr> <Tr> <Td> 6 . Philippines </Td> <Td> 56,478 </Td> <Td> 53,287 </Td> </Tr> <Tr> <Td> 7 . Vietnam </Td> <Td> 30,832 </Td> <Td> 41,451 </Td> </Tr> <Tr> <Td> 8 . Haiti </Td> <Td> 16,967 </Td> <Td> 23,584 </Td> </Tr> <Tr> <Td> 9 . El Salvador </Td> <Td> 19,487 </Td> <Td> 23,449 </Td> </Tr> <Tr> <Td> 10 . Jamaica </Td> <Td> 17,642 </Td> <Td> 23,350 </Td> </Tr> <Tr> <Td> Total </Td> <Td> 1,051,031 </Td> <Td> 1,183,505 </Td> </Tr> </Table> <Tr> <Th> Country </Th> <Th> 2015 </Th> <Th> 2016 </Th> </Tr>

Where do most immigrants to the u.s. come from (which country )