The energy flow diagram here is from the EIA and represents 2016 petroleum use in millions of barrels per day. For example, the U.S. used 13.88 million barrels of petroleum per day for transportation in 2016. The EIA energy flow diagrams (found on the right sidebar) are excellent for use in the classroom and they have recently been updated with 2016 data. They produce flow diagrams for total energy, petroleum, natural gas, coal, and electricity as well as a sources and sectors chart. They keep an archive of their charts dating back to 1996.