The line graph gives information about the consumption of fast foods, measured in grams, from 1970 to 1990, a period of 20 years.
It can be seen from the chart that the number of hamburgers rose sharply and pizzas increased more slowly than hamburgers over the time frame. Besides, the quantity of fish and chips fell and then went up steadily.
The number for hamburgers stayed unchanged at 100 grams during the first 5 years and then rose dramatically for the next 15 years, after which it climbed to a peak of about 540 grams in 1990. The figure for pizzas grew gradually over the years and reached a peak of nearly 200 grams in 1990. Unlike the data of the above foods, the consumption volume of fish and chips started at 300 grams at the beginning of the year. For the next 10 years, the figure plummeted to 200 grams, the opposite was true in the last 5 years, it increased by about 300 grams until 1990.