The illustration depicts the consumption of three kinds of junk food in Britain from 1970 to 1990.
Overall, the consumption of pizza in Britain gradually declined while the other two items increased slightly over the given period and it is noticeable that fish & chips reached the highest rate.
As regards the first, the expenditure on pizza went down slightly from 800% in 1970 to 200% in next 15 years, then subsequently climbed to just over 200% at the end of the period.
By contrast, there was a noticeable increase in fish & chips. In 1970, the consumption of fish & chips stood at around 80%, followed by a marginal growth to around 150% in a decade. After that, significantly soared until it hit a peak of 500 rates from 1980 onwards. On the other hand, the consumption of hamburgers started at approximately 20% at the beginning of 1970, then increased slightly throughout the period until it reached just under 300% at the end of the period.