These documents, sometimes referred to as Private Letter Rulings, are taken from the IRS Written Determinations page; the IRS also publishes a fuller explanation of what they are and what they mean. The collection is updated (at our end) daily.
Ethiopia's population was estimated at 51.7 million in 1990. According to the nation's only census, conducted in 1984, Ethiopia's population was about 42 million. But the census was far from comprehensive.
According to the census held in 2012, the population of the country was estimated to be 29,195,895 - the 43rd largest in the world. But the recent estimates for 2016 indicate the total population has grown to over 31 million.