Port Moresby ( /ˌpɔərt ˈmɔərzbi/), or Pot Mosbi in Tok Pisin, is the capital and largest city of Papua New Guinea (PNG). It is located on the shores of the Gulf of Papua, on the southeastern coast of the island of New Guinea, which made it a prime objective for conquest by the Imperial Japanese forces during 1942–43 in World War II, as a staging point and air base to cut off Australia from Southeast Asia and the Americas. In 2000 it had a population of 254,158. As of 2009 it has a population of 307,643, giving it an annual growth rate of 2.1% over a nine year period.