Have you ever wondered why there are so few $2 bills in circulation? Sure, we have a lot of singles and fives in our wallets, but rarely do we come across a $2 bill.

In fact, the $2 bill is America's rarest small denomination in US Currency. Low printing numbers in the 1950s drove it be one of the rarest current denominations today. This caused people to hoard any $2 bills they came across which resulted in decreasing in circulation.

Today, the $2 bill only accounts for 1% of all bills in US circulation. The $2 bill however, is growing in popularity. In 2005, 61 million $2 bills were printed, twice as many as were printed between 1990 and 2001. The surge in popularity is because it is desired when tipping is encouraged. Using a $2 bill is popular in some bars and night clubs, as well as poker rooms.

While this can be seen as a unique gift, it's not as rare as many of us thought.

"If you start tipping waiters and waitresses and valets, they're going to remember who you are and the next time you come in if you keep doing it, you're going to get better service. This has been proven to me several times when I use them. It's a way to get remembered, it's a way to stand out," writes Tommy Andres.

Steve Wozniak, co-founder of Apple, buys two dollars by the sheet directly from the Treasury Department. He then bounds them into a booklet and can then use the bills as tear off pages when he needs them.

He's not the only one who is generous with the 2 dollar bills.

A plane full of people got an unexpected surprise on a Southwest flight to North Carolina.

Natalie Gunderson, from Ohio, was among the passengers on board when a stranger began handing out $2 bills to every person.

The stranger told everyone that his dad gave him a $2 bill when he was 16 and was told that as long as he kept it, he'd never be broke.

"That man honored his dad and gave everyone on our (almost full) flight a $2 bill so we'll never be broke," Gunderson said. "He just wanted to spread the love. Good people doing good things."

Gunderson shared the photo of all the passengers on the plane holding up their token of good fortune.

"In the midst of all the crap going on in the world, here is some 'good' for your Facebook feed," Gunderson said.

Source: Fox 5 / The $2 Dollar Bill / Marketplace