<Table> <Tr> <Th_colspan="10"> World population milestones in billions </Th> </Tr> <Tr> <Th> Population </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> 5 </Th> <Th> 6 </Th> <Th> 7 </Th> <Th> 8 </Th> <Th> 9 </Th> </Tr> <Tr> <Th> Year </Th> <Td> 1804 </Td> <Td> 1927 </Td> <Td> 1960 </Td> <Td> </Td> <Td> </Td> <Td> 1999 </Td> <Td> 2011 </Td> <Td> 2024 </Td> <Td> 2042 </Td> </Tr> <Tr> <Th> Years elapsed </Th> <Td>---- </Td> <Td> 123 </Td> <Td> 33 </Td> <Td> 14 </Td> <Td> 13 </Td> <Td> 12 </Td> <Td> 12 </Td> <Td> 13 </Td> <Td> 18 </Td> </Tr> </Table> <Tr> <Th_colspan="10"> World population milestones in billions </Th> </Tr> <Tr> <Th> Population </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> 5 </Th> <Th> 6 </Th> <Th> 7 </Th> <Th> 8 </Th> <Th> 9 </Th> </Tr> <Tr> <Th> Year </Th> <Td> 1804 </Td> <Td> 1927 </Td> <Td> 1960 </Td> <Td> </Td> <Td> </Td> <Td> 1999 </Td> <Td> 2011 </Td> <Td> 2024 </Td> <Td> 2042 </Td> </Tr>

When did india's population reached 1 billion