Per the 2017 census, only 12% of Qatar’s population are Qatari citizens. The remaining 2.3 million people are expatriates. – WTF Fun Facts
Census
WTF Fun Fact – Inca Quipu
The Incas used colorful knotted cords called Quipu to record numbers and archives such as census data, tax obligations, and storehouse records. They had up to a thousand unique strands. – WTF Fun Facts
Source: https://en.wikipedia.org/wiki/Quipu
Average Japanese farmers age
According to the latest census, the average age of farmers in Japan is 67 and the total amount of people working in agriculture has decreased by 60% in the last three decades. – WTF Fun Facts