Wendover Productions explains basic economics of airline classes. The passengers in first class and business, assuming seats are occupied, make much more for airlines than the economy class. Sounds familiar.
Economics of airline class
This is an American Workday, By Occupation
I simulated a day for employed Americans to see when and where they work.
Interactive: When Do Americans Leave For Work?
We don’t all start our work days at the same time, despite what morning rush hour might have you think.
Unemployment in America, Mapped Over Time
Watch the regional changes across the country from 1990 to 2016.