The line graph shows the amount of whole milk and low-fat milk purchased per person in the United States between 1970 and 2015.
Overall, it is clear that the amount of whole milk steadily declined from 25 gallons to 5 gallons. In contrast, the consumption of low-fat milk has increased, nearly twice as much.
Looking at the line graph more closely, one can see that during twenty-year period from 1970 to 1990, the amount of low-fat milk per person rose rapidly from more than 5 gallons to nearly 15 gallons. However, whole milk sales decreased sizably resulting low-fat milk catching up. Moreover, gallons of whole milk consumed constantly shrank until 2015 to 5 gallons. In addition, low-fat milk consumption remained relatively constant from 1990 to 2010, but then slightly fell until 2015. Yet, it is obvious that the demand for low-fat milk is more than two times higher than whole milk.