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.
It is estimated that around 11% of South Sudan ese people were not surveyed, which, if correct, would mean that the population of South Sudan in 2008 was around 9.28 million people. The South Sudan population in 2011 was considerably higher-perhaps as much as 10-12 million.