Cambodia is currently one of the poorest countries in the world. Its per-capita income is only US$260. However, if adjusted for purchasing power parity (which takes into account the low prices for goods in Cambodia), its per-capita income jumps rather dramatically to US$1300. Approximately 36 percent of the population is living below the poverty line. Because of the years of civil war and strife, more than 25 percent of households in Phnom Penh are headed by a single mother. The existence of poverty and unemployment among less-educated women has contributed to the emergence of a commercial sex industry. This industry is part of a large informal economy in Cambodia that is not reflected in the official statistics reported in this entry.