The given line graph illustrates the consumption trends of three types of fast food—hamburgers, fish & chips, and pizza—in the UK from 1970 to 1990. The number of units consumed per year is measured on the vertical axis.
Overall, the consumption of fish & chips and hamburgers increased significantly over the period, while pizza saw a decline before stabilizing. Fish & chips experienced the most dramatic rise, making it the most popular fast food by 1990.
In 1970, pizza was the most consumed fast food, with around 300 units eaten annually, whereas fish & chips and hamburgers were much less popular, at approximately 100 and 50 units, respectively. However, pizza consumption declined gradually until the mid-1980s, reaching a low of around 200 units before showing a slight increase.
Meanwhile, the consumption of fish & chips saw a sharp and consistent rise, surpassing pizza around 1980 and reaching a peak of 500 units in 1990. Similarly, hamburger consumption increased steadily, with a noticeable surge after 1985, ultimately reaching approximately 300 units by the end of the period.
In summary, fish & chips became the most consumed fast food by 1990, followed by hamburgers, while pizza, initially the most popular, declined before stabilizing.