The provided graphic demonstrates the levels of fast food intake among people. The given data covers the consumption levels (in grams) of fish and chips, hamburgers, and pizza from 1970 to 1990.
In the early 1970s, pizza was the most popular fast food, averaging 300 grams per person. However, its popularity declined over time, especially in the 1980s, and by the end of the decade, consumption had dropped to 200 grams—a decrease of one-third. In contrast, hamburgers and fish and chips rapidly gained popularity. While hamburgers were not widely consumed in the early 1970s, by the 1990s, their consumption had risen to 300 grams, a sixfold increase. Fish and chips saw an even more dramatic rise, starting at 80 grams and ultimately becoming the most consumed of the three, reaching 500 grams.
Thus, over several decades, preferences in the fast food industry have noticeably shifted—pizza lost its dominance, while hamburgers and fish and chips saw significant growth in sales. This trend reflects global changes in fast food consumption habits.