The Nigerian economy with a population of 158.2 Million (Est 2009) ranks 31st in the world with a GDP PPP of 374 billion and GDP PPP per capita of 2,422 vs 47,284 (United States) according to the IMF in 2010. Its currency is the Nigerian Naira (NGN). Bank deposits held for a fixed term in Nigeria are called fixed deposits or term deposits. According to CIA.gov its inflation was 11.5% in 2009 and 13.9% in 2010.