<Table> <Tr> <Th> </Th> <Th> Australia </Th> <Th> show United States </Th> </Tr> <Tr> <Td> Coat of Arms </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Flag </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Population </Td> <Td> 24,968,100 </Td> <Td> 324,894,500 </Td> </Tr> <Tr> <Td> Area </Td> <Td> 7,692,024 km (2,969,907 sq mi) </Td> <Td> 9,629,091 km (3,717,813 sq mi) </Td> </Tr> <Tr> <Td> Population density </Td> <Td> 2.8 / km (1.74 / sq mi) </Td> <Td> 34.2 / km (13.2 / sq mi) </Td> </Tr> <Tr> <Td> Government </Td> <Td> Federal parliamentary constitutional monarchy </Td> <Td> Federal presidential constitutional republic </Td> </Tr> <Tr> <Td> Current leader </Td> <Td> Elizabeth II (head of state) Represented by Governor General Peter Cosgrove <P> Malcolm Turnbull (Prime Minister) </P> </Td> <Td> Donald Trump (President) <P> Mike Pence (Vice President) </P> </Td> </Tr> <Tr> <Td> Main language </Td> <Td> English </Td> <Td> English </Td> </Tr> <Tr> <Td> Main religions </Td> <Td> 52% Christian 30% non-religious 18% other </Td> <Td> 74% Christian 20% non-religious 6% other </Td> </Tr> <Tr> <Td> GDP (nominal) </Td> <Td> US $1.259 trillion </Td> <Td> US $18.569 trillion </Td> </Tr> <Tr> <Td> GDP (nominal) per capita </Td> <Td> US $51,850 </Td> <Td> US $57,436 </Td> </Tr> <Tr> <Td> GDP (PPP) </Td> <Td> $1.137 trillion </Td> <Td> $17.528 trillion </Td> </Tr> <Tr> <Td> GDP (PPP) per capita </Td> <Td> US $48,899 </Td> <Td> $57,436 </Td> </Tr> <Tr> <Td> Real GDP growth rate </Td> <Td> 2.50% </Td> <Td> 1.80% </Td> </Tr> <Tr> <Td> Military expenditure </Td> <Td> $24.48 billion </Td> <Td> $640.0 billion </Td> </Tr> <Tr> <Td> Military personnel </Td> <Td> 77,399 </Td> <Td> 2,927,754 </Td> </Tr> </Table> <Tr> <Th> </Th> <Th> Australia </Th> <Th> show United States </Th> </Tr> <Tr> <Td> Coat of Arms </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Flag </Td> <Td> </Td> <Td> </Td> </Tr>

When is this is us on in australia