The 2010 census counted 40,117,096 inhabitants, up from 36,260,130 in 2001. Argentina ranks third in South America in total population, fourth in Latin America and 33rd globally. Its population density of 15 persons per square kilometer of land area is well below the world average of 50 persons. The population growth rate in 2010 was an estimated 1.03% annually, with a birth rate of 17.7 live births per 1,000 inhabitants and a mortality rate of 7.4 deaths per 1,000 inhabitants. Since 2010, the crude net migration rate has ranged from below zero to up to four immigrants per 1,000 inhabitants per year.