A massive influx of Palestinian refugees swelled Gaza's population after the 1948 Arab–Israeli War. By 1967, the population had grown to about six times its 1948 size. In 1997, 51.8% of Gaza's inhabitants were refugees or their descendants. The city's population has continued to increase since that time to 590,481 in 2017, making it the largest city in the Palestinian territories. Gaza City has one of the highest overall growth rates in the world. Its population density is 9,982.69/km2 (26,424.76/sq mi) comparable to New York City (10,725.4/km2 – 27,778.7/sq mi), half of Paris density (21,000/km2 – 55,000/sq mi). In 2007 poverty, unemployment and poor living conditions were widespread and many residents received United Nations food aid.