Rategain said the report uses data from the company's Airline Travellers' Forecast, which uses demand artificial intelligence (AI) to provide an understanding of the actual number of travellers, the source market mix, and the demand from these markets over the next 90 days. The company said the world generated more than $1.4 trillion in tourism receipts in 2019, and all travel numbers have been compared to pre-pandemic 2019 numbers to check the health of the industry.