The line graph compares fast food consumption among adolescents in Australia between 1975 and 2000, a period of 25 years. The figures are presented as the number of times each type was eaten per year. Overall, the consumption of fish and chips declined over the period, whereas the consumption of pizza and hamburgers increased.
In 1975, the most popular fast food with Australian teenagers was fish and chips, being eaten 100 times a year. This was far higher than pizza and hamburgers, which were consumed approximately 5 times a year. However, apart from a brief increase from 1980 to 1985, the consumption of fish and chips gradually declined over the 25 year timescale, ending at just under 40 times per year.
In sharp contrast, the consumption of the other two fast foods increased considerably. Pizza consumption increased gradually until it overtook fish and chips in 1990. It then levelled off from 1995 to 2000. The biggest rise was in hamburgers, as the occasions on which they were eaten increased sharply throughout the 1970’s and 1980’s, surpassing fish and chips in 1985. It ended at 100 times per year, the same level at which fish and chips started.