Tanzania is an east African nation with a long coastline along the Indian Ocean. The country shares borders with Kenya, Uganda, Rwanda, Burundi, the Democratic Republic of Congo, Zambia, Mozambique and Malawi. It ranks 31st in the world in terms of total area available. The terrain in this region consists of coastal plains along the east to highlands towards the north and south. Tanzanias economy is one of the poorest in the world, based on the UN statistics for 2009. Almost 36% of the total population (in excess of 43.7 million) lives below the international poverty line. According to the 2009 estimates, Tanzania has an annual GDP of US$57.5 billion, which ranks the nation 85th in the world. However, the GDP per capita is one of the lowest in the world at US $1,400. Owing to continuing fiscal reforms, the country is able to achieve sustainable economic growth.