 Most of its original datasets have reportedly been lost, so most of what is known about it nowadays comes from essays and field investigations made by academics who had access to the census data and used it as reference for their works, such as Prussian geographer Alexander von Humboldt.Each author gives different estimations for each racial group in the country although they don't vary greatly, with Europeans ranging from 18% to 22% of New Spain's population, Mestizos from 21% to 25%, Indians from 51% to 61%, and Africans from 6,000 and 10,000.The estimations given for the total population range from 3,799,561 to 6,122,354.