<Tr> <Td_colspan="8"> Census results for Kirkuk Governorate </Td> </Tr> <Tr> <Th> Ethnic group </Th> <Th> 1957 </Th> <Th> Percentage </Th> <Th> 1977 </Th> <Th> Percentage </Th> <Th> </Th> <Th> Percentage </Th> </Tr> <Tr> <Td> Arabs </Td> <Td> 109,620 </Td> <Td> 28.2% </Td> <Td> 218,755 </Td> <Td> 45% </Td> <Td> 544,596 </Td> <Td> 72% </Td> </Tr> <Tr> <Td> Kurds </Td> <Td> 187,593 </Td> <Td> 48.2% </Td> <Td> 184,875 </Td> <Td> 38% </Td> <Td> 155,861 </Td> <Td> 21% </Td> </Tr>

Three distinct ethnic groups that make up iraq