The line graph illustrates the frequency of fast food consumption among Australian teenagers over a 25-year period from 1975 to 2000, focusing on three types—hamburgers, fish and chips, and pizza.
Overall, while the popularity of different fast food items fluctuated throughout the years, by the end of the period, consumption rates for all three types converged closely.
In 1975, hamburgers were the predominant choice, consumed approximately 82 times per year by teenagers. Fish and chips followed significantly behind, with about 38 annual consumptions, whereas pizza was marginal at merely 5 times. A decade later, in 1985, a notable shift occurred as fish and chips gained popularity, surpassing hamburgers with consumption reaching around 100 times annually. In this same year, hamburgers experienced a decline to about 82 times, and pizza registered a substantial increase, rising to around 52 times.
The trend continued into the mid-1990s, where, by 1995, pizza consumption peaked at approximately 82 times per year, overtaking both hamburgers and fish and chips during this period. The latter saw a decline to around 70 times, while hamburgers fell to about 50 times. By the year 2000, the consumption rates for all three types of fast food had leveled out, with pizza at around 82 times, hamburgers at about 82, and fish and chips slightly higher at approximately 85 times per year.