The presented line graph depicts the day-to-day consumption per person of three varieties of spreads over the years 1981 to 2007. The data is recorded in grams.
Overall, it is observed that usage of butter greatly fell in popularity; consumption of low fat and reduced spreads remained fairly consistent; and demand for margarine saw a spike as well as a slight decline over the given period.
As can be observed from the graph, from 1981 up to 1996, only butter and margarine were in usage. Of the two, butter was vastly preferred by the people over margarine until 1991 when per person consumption of both the spreads converged at 100 grams. Immediately following this, the popularity of butter continuously dropped, whereas that of margarine plateaued.
In the year 1996, a new kind of spread was introduced to the scene. Subsequently, it saw a steep incline in usage over its initial years peaking at 80 grams per person in 2001, simultaneously matching margarine consumption in the same year. Over the next 5 years, its demand slightly abated. However, it maintained its position as the most preferred spread. Butter and margarine on the other hand experienced varying levels of fall in demand.