Bing found the following results
Reports and Statistics - Travel
How many US passports are in circulation? - USAFacts
Is it true only 10% of Americans have passports? - BBC
Only one-third of Americans have a valid US passport | YouGov
Chart: More Americans Than Ever Hold A Passport | Statista
The Share Of Americans Holding A Passport Has Increased ... - Forbes
Valid US passports in circulation - USAFacts
Share of US citzens owning a passport 1989-2017 | Statista
Is it true only 10% of Americans have passports? - BBC News
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