Few countries still produce a banknote with as little value as the US $1 bill. Because the bills wear out so quickly, the government has to print about 2 to 5 billion new ones every year. Producing bills instead of long-lasting dollar coins means extra expense for the government, extra annoyance when consumers try to use them in finicky vending machines, and extra challenges for blind Americans who have to distinguish between identical-sized bills.
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