The United States came second followed closely by Spain, according to annual figures that the Madrid-based UNWTO normally announces in January, but which were delayed this year.
But although France stayed on top by welcoming 82.6 million visitors in 2016, that was a more than two percent drop from the previous year, the figures showed.
Repeated terror attacks had sparked concerns that tourism would drop substantially in France, known especially for its gastronomy and wine but the data indicated most visitors have not been put off.
The latter's tourism industry has boomed partly because people who normally go to Turkey, Egypt or north Africa for their holidays are instead deciding to chase the sun in Spain, citing fears of unrest.
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China came fourth in the ranking with just under 60 million visitors and Italy came fifth -- the same as in 2015.
The classification is calculated according to the number of visitors who spend at least one night in a country.
Spain came second with around USD 60 billion -- another rise compared to 2015 -- followed by Thailand and China.
Britain, meanwhile, fell from third to seventh place at USD 34 billion due in part to the depreciation of the pound compared to the dollar after the Brexit vote to leave the European Union, added the UNWTO.
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