The line graph below shows changes in the amount and type of fast food consumed by Australian teenagers from 1975 to 2000.

The given line graph indicates the rate three various types of fast food consumed by Australian teenagers per year, over a 25-year-timespan, between 1975 and 2000. Overall, it is apparent that hamburgers and pizza shared the same upward trends in consumption rate while there was a downward trend detected in the amount of fish and chips was eaten. Another interesting point is that although fish and chips started as the most popular fast food with Australian youth, it did not manage to recapture its first position at the end of the period. More specifically, regarding hamburgers, the data commenced at around 10 times a year, and then it increased dramatically to just above 80 timers per year in the next decade. Furthermore, despite a gradual growth by roughly 20 times in the next 10 years, the figure levelled off and finished the period at 100 times per year, which made hamburgers the most eaten junk food in 2000. Similarly, as for pizza, a consistent rise from 5 times to over 80 times was seen during 1975 and 1995. After that, the rate remained stable at approximately 82 times a year throughout the last five years, almost 80 times higher than that of the starting point. In contrast, with respect to fish and chips, it was the most favourite fast food in 1975 as it was eateng 100 times a year initially. Moreover, having fluctuated slightly in the first 15 years, the data dropped noticeably, plummeting to under 40 times per year in 2000, which means that fish and chips became the least common dishes compared to the two other types.