The total population in Nigeria was last recorded at 162.5 million people in 2011 from 45.2 million in 1960, changing 260 percent during the last 50 years. Population in Nigeria is reported by the World Bank. Historically, from 1960 until 2011, Nigeria Population averaged 92.0 Million reaching an all time high of 162.5 Million in December of 2011 and a record low of 45.2 Million in December of 1960. The population of Nigeria represents 2.35 percent of the world´s total population which arguably means that one person in every 43 people on the planet is a resident of Nigeria. This page includes a chart with historical data for Nigeria Population.
See the graph below:
However it has been forcasted that the countries population will grows to 170 million at the end of 2013 following the the fact that her population has grown at the rate of 3.2 percent per annum.