In pure volume, that comes to amounts of bills in the seven major denominations numbering in the billions:

11.7 billion one-dollar bills. 1.2 billion two-dollar bills. 2.8 billion five-dollar bills. 1.9 billion ten-dollar bills. 8.9 billion twenty-dollar bills. 1.7 billion fifty-dollar bills. 11.5 billion hundred-dollar bills.

Two pretty striking things about these stats, apart from the sheer quantities of all US bills: One, there are almost as many hundred-dollar bills as there are one-dollar bills, and two, even a bill commonly thought of as rare, like the two-dollar bill, has 1.2 billion strong fluttering around the economy. Those hundred-dollar bills together make up about 80 percent of the total value of the currency, and 70 percent of the new bills printed by the US Mint go towards replacing, old, used-up bills. The US Bureau of Engraving and Printing has also released stats on the average lifespan of each bill, by denomination (excluding the two, which doesn’t circulate enough for adequate data):

One-dollar bill: 5.8 years. Two-dollar bill: 5.5 years. Ten-dollar bill: 4.5 years. Twenty-dollar bill: 7.9 years. Fifty-dollar bill: 8/5 years. One Hundred-dollar bill: 15 years.

While we’re on the subject of bills, there are in existence eight varieties of US legal tender that are above the hundred-dollar bill in value. There are two varieties each of $500 bills, $1,000 bills, and $10,000 bills, as well as one of a kind $5,000 bill and even a $100,000 “gold certificate” that’s actually illegal for collectors to hold onto. Here’s the US Bureau of Engraving and Printing on that little rarity: That’s just a quick rundown on the paper money circulated in the US, there’s also the 20 billion coins that run through the Mint’s processing protocols every year, valued at around $2 billion.