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.
As of 2013, the total population of Africa is estimated at 1.1 billion, representing approximately 15% of the world's population. According to UN estimates, the population of Africa may reach nearly 2.5 billion by 2050 (about 26% of the world's total) and nearly 4.4 billion by 2100 (about 39% of the world's total).