If you every wondered many paper bills the Mint produces every year, you’ll be interested to learn the don’t produce any. Printing is done by Bureau of Engraving and Printing. And bills don’t contain paper, they are made of 75% cotton and 25% linen. The cotton and linen paper mix makes the banknotes much more durable than normal paper. The Bureau estimates that it takes roughly 4,000 double folds before a banknote tears. How long a bill lasts in circulation depends on how often it is used by the public. For instance, $10 bills last an average of 4.2 years, while $100 bills typically last for 15 years.