In 2015, the Tampa Bay Buccaneers had a top 5 offense based upon yards and heavily aided by a top rushing game. On average, the Bucs scored 21.4 points per game that year. In 2016, the Bucs were an 18th ranked offense based upon yards. They still scored 22.1 points per game.
2016 NFL Scoring, Box and Whisker Diagram
/cdn0.vox-cdn.com/uploads/chorus_asset/file/8531741/2016_NFL_Scoring__Box_and_Whiskers.jpg)
Low = 14.0, Lower Quartile = 20.1 (the start of the box), Median = 22.4 (vertical line),
Upper Quartile = 25.65 (the end of the box), High = 33.