<Tr> <Td> </Td> <Td> South Korea Republic of Korea </Td> <Td> Seoul </Td> <Td> 100,140 </Td> <Td> c51,448,183 </Td> <Td> 493 </Td> <Td> 7004352770000000000 ♠ 35,277 </Td> <Td> 6999891000000000000 ♠ 0.891 </Td> <Td> South Korean won (KRW; ₩) </Td> <Td> Korean </Td> <Td> Head of state: Moon Jae - in Head of government: Lee Nak - yeon </Td> </Tr> <Table> <Tr> <Th> Flag </Th> <Th> Country </Th> <Th> Capital </Th> <Th> Area (km) </Th> <Th> Population </Th> <Th> Density (/ km) </Th> <Th> GDP per cap . (PPP) </Th> <Th> HDI </Th> <Th> Currency </Th> <Th> Official languages </Th> <Th> Leaders </Th> <Th> Status </Th> </Tr> <Tr> <Td> </Td> <Td> Papua New Guinea Independent State of Papua New Guinea </Td> <Td> Port Moresby </Td> <Td> 462,840 </Td> <Td> a7,400,000 </Td> <Td> 14.5 </Td> <Td> 7003239900000000000 ♠ 2,399 </Td> <Td> 6999491000000000000 ♠ 0.491 </Td> <Td> Papua New Guinean kina (PGK; K) </Td> <Td> English, Tok Pisin and Hiri Motu </Td> <Td> Head of state: Elizabeth II Governor - General: Bob Dadae Head of government: Peter O'Neill </Td> <Td> Observer </Td> </Tr> <Tr> <Td> </Td> <Td> Timor - Leste Democratic Republic of Timor - Leste </Td> <Td> Dili </Td> <Td> 14,874 </Td> <Td> b1,231,116 </Td> <Td> 76.2 </Td> <Td> 7003492800000000000 ♠ 4,928 </Td> <Td> 6999620000000000000 ♠ 0.620 </Td> <Td> United States dollar (USD; $) </Td> <Td> Tetum and Portuguese </Td> <Td> Head of state: Francisco Guterres Head of government: Mari Alkatiri </Td> <Td> Observer </Td> </Tr> </Table> <Tr> <Th> Flag </Th> <Th> Country </Th> <Th> Capital </Th> <Th> Area (km) </Th> <Th> Population </Th> <Th> Density (/ km) </Th> <Th> GDP per cap . (PPP) </Th> <Th> HDI </Th> <Th> Currency </Th> <Th> Official languages </Th> <Th> Leaders </Th> <Th> Status </Th> </Tr> <Tr> <Td> </Td> <Td> Papua New Guinea Independent State of Papua New Guinea </Td> <Td> Port Moresby </Td> <Td> 462,840 </Td> <Td> a7,400,000 </Td> <Td> 14.5 </Td> <Td> 7003239900000000000 ♠ 2,399 </Td> <Td> 6999491000000000000 ♠ 0.491 </Td> <Td> Papua New Guinean kina (PGK; K) </Td> <Td> English, Tok Pisin and Hiri Motu </Td> <Td> Head of state: Elizabeth II Governor - General: Bob Dadae Head of government: Peter O'Neill </Td> <Td> Observer </Td> </Tr>

When did australia become a member of asean