<P> The accuracy of official unemployment figures has been brought into question in the Australian media due to discrepancies between the methods of different research bodies (Roy Morgan versus the ABS), differing definitions of the term' unemployed' and the ABS' practice of counting under - employed people as "employed". </P> <P> As of May 2017, the Australia labour force were employed in the following industries: </P> <Table> <Tr> <Th> Rank </Th> <Th> Industry </Th> <Th> No. of employees (' 000s) </Th> <Th>% of total </Th> </Tr> <Tr> <Td> </Td> <Td> Health Care and Social Assistance </Td> <Td> 1562.6 </Td> <Td> 12.9% </Td> </Tr> <Tr> <Td> </Td> <Td> Retail Trade </Td> <Td> 1228.4 </Td> <Td> 10.1% </Td> </Tr> <Tr> <Td> </Td> <Td> Construction </Td> <Td> 1108.3 </Td> <Td> 9.1% </Td> </Tr> <Tr> <Td> </Td> <Td> Professional, Scientific and Technical Services </Td> <Td> 1018.5 </Td> <Td> 8.4% </Td> </Tr> <Tr> <Td> 5 </Td> <Td> Education and Training </Td> <Td> 971.8 </Td> <Td> 8.0% </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Manufacturing </Td> <Td> 906.5 </Td> <Td> 7.5% </Td> </Tr> <Tr> <Td> 7 </Td> <Td> Accommodation and Food Services </Td> <Td> 872.1 </Td> <Td> 7.2% </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Public Administration and Safety </Td> <Td> 812.0 </Td> <Td> 6.7% </Td> </Tr> <Tr> <Td> 9 </Td> <Td> Transport, Postal and Warehousing </Td> <Td> 614.0 </Td> <Td> 5.1% </Td> </Tr> <Tr> <Td> 10 </Td> <Td> Financial and Insurance Services </Td> <Td> 436.1 </Td> <Td> 3.6% </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Administrative and Support Services </Td> <Td> 411.0 </Td> <Td> 3.4% </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Wholesale Trade </Td> <Td> 391.0 </Td> <Td> 3.2% </Td> </Tr> <Tr> <Td> 13 </Td> <Td> Agriculture, Forestry and Fishing </Td> <Td> 296.7 </Td> <Td> 2.4% </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Mining </Td> <Td> 235.8 </Td> <Td> 1.9% </Td> </Tr> <Tr> <Td> 15 </Td> <Td> Arts and Recreation </Td> <Td> 215.7 </Td> <Td> 1.8% </Td> </Tr> <Tr> <Td> 16 </Td> <Td> Rental, Hiring and Real Estate Services </Td> <Td> 212.8 </Td> <Td> 1.8% </Td> </Tr> <Tr> <Td> 17 </Td> <Td> Information Media and Telecommunications </Td> <Td> 211.4 </Td> <Td> 1.0% </Td> </Tr> <Tr> <Td> 18 </Td> <Td> Utilities </Td> <Td> 125.5 </Td> <Td> 1.0% </Td> </Tr> <Tr> <Td> </Td> <Td> Total Labour Force </Td> <Td> 12113.3 </Td> <Td> 100.0% </Td> </Tr> </Table> <Tr> <Th> Rank </Th> <Th> Industry </Th> <Th> No. of employees (' 000s) </Th> <Th>% of total </Th> </Tr>

What industry developed into australia's biggest business