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While one 2000 estimate found there to be just under ten thousand privately owned jets in the world, the past two decades have seen the global fleet increase by 133 percent to more than twenty-three thousand. The overall number of flights has exploded as well. Prior to 2020, the twenty-first-century record for private flights was 4.8 million in 2007. Last year, the figure was an astonishing 5.3 million.