The given line graph provides a comparison of the expenditure on butter and margarine in the United States over a 40-year period, from 1980 to 2020.
Overall, it is apparent that while the consumption of margarine saw a plunge throughout the period. Simultaneously, that of butter initially experienced a modest decline and subsequently surpassed that of margarine through steady growth.
At the beginning of the period in 1980, the utilization of margarine started at over 10 lbs. At the same time, this figure was twice as high as that of butter, which stood at just under 5 lbs. In the next decades, margarine consumption underwent a consecutive plummet to roughly 5 lbs in nearly 2010 and ended at 2 lbs in 2020.
In contrast, the expenditure on butter was recorded at approximately 5 lbs in 1980. In the next decade, this figure constituted a decline to precisely 4 lbs in 1990. Subsequently, the usage of butter followed an upward trend and overtook that of margarine at 5 lbs in close to 2010, and turned into the higher category. At the end, the utilization on butter rose to 6 lbs.