Number of signers of the Declaration of Independence who recanted the signing (Richard Stockton of New Jersey, who did so while being held a prisoner of the British).
Age of the youngest signer of the Declaration of Independence (Edward Rutledge of South Carolina).
Number of signers of the Declaration of Independence.
Percentage of Americans who attend a fireworks display on the 4th.
Age of the oldest signer of the Declaration of Independence (Benjamin Franklin).
The year Massachusetts became the first state to make the 4th of July a state holiday.
The year Congress declared Independence Day a federal legal holiday.
The number of people living in the new nation when the Declaration of Independence was signed in 1776.
The dollar value of U.S. flags exported in 2015.
Number of hot dogs consumed on the 4th of July.
The value of fireworks imported from China in 2015.
Source: history.com, infoplease.com.