The line graph illustrates the frequency of fast food consumption among Australian teenagers between 1975 and 2000, a span of 25 years. Overall, the data reveal a significant decline in the popularity of fish and chips, while pizza and hamburger consumption rose markedly over the period.
In 1975, fish and chips were by far the most popular fast food choice among teenagers, with an average consumption rate of 100 times per year. This was substantially higher than both pizza and hamburgers, each consumed around five times annually.
However, after a minor resurgence from 1980 to 1985, fish and chips consumption steadily declined, ending at just under 40 times per year in 2000.
In stark contrast, the consumption of both pizza and hamburgers surged. Pizza gradually gained popularity, surpassing fish and chips by 1990. From 1995 to 2000, its consumption rate leveled off, indicating a period of stability. The most dramatic increase, however, was in hamburger consumption, which rose sharply during the late 1970s and 1980s. By 1985, hamburgers had overtaken fish and chips and continued to climb, reaching 100 times per year by 2000—the same level at which fish and chips started in 1975.
In summary, while fish and chips declined in popularity, hamburgers and pizza became increasingly favored, with hamburgers ultimately equaling the initial popularity level of fish and chips by the end of the period.