It would take a very involved conspiracy to make these numbers fall in line with where they should be given a certain pop cap, and I'm not sure what would be the benefit.
Like all conspiracy theories, if it requires a coordination of large unrelated organizations over long timeframes, which seems impossible even over the table, its almost certainly fake.
Like you can fake census data, but not how many cans of beans does a US-headquartered supermarket chain sells.
Then there's also Occam: if you're a poor nation and you'll get more foreign aid if you inflate your population, you will inflate your population, full stop.