I want to know the answer to the following question:
What is the source of the population data?
All the background I'm provided with is that "The proportion of the population below the age of 15 in 2010 was 41.3%, 55.4% were aged between 15 and 65 years of age, while 3.3% were aged 65 years or older.". Is that enough to answer the question?
Answer: no