Paula had her first panic attack six months ago. She was in her office preparing for an important work presentation when, suddenly, she felt an intense wave of fear. Then the room started spinning and she felt like she was going to throw up.
There is about $1.2 trillion dollars of U.S. currency in circulation. The Federal Reserve Banks distribute new currency for the U.S. Treasury Department, which prints it.
According to the US Mint, most American coins stay in circulation for about 30 to 50 years. Pennies get more use and are more likely to be lost or put away in jars due to their low value, so they go out of circulation somewhat faster. Other countries have had different experiences.