Tourism is the world's largest service industry in terms of revenue generation. International tourism revenue had been growing almost continuously until COVID-19, so that in 2019 global tourism revenue reached 1.438.4 billion dollars.
But in 2020 the deadly shadow of COVID-19 also fell on tourism, and global tourism revenue dropped to 548 billion dollars a year. Nevertheless, in 2021 this industry recovered, and global tourism revenue, with a 13 percent increase over the previous year, reached 621 billion dollars a year.
After Italy, which ranks fifth among the world's tourist countries, the United Kingdom, Germany, Turkey, Mexico, and Australia, respectively, took sixth through tenth place on the list of the highest-earning countries in the tourism industry.
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Machine-translated from Persian by Namafar; the Persian original is authoritative. Read the original in Persian