The line graph compares spending on three different takeaway foods in the UK between 1970 to 1990. 
Overall
, the number of people who preferred hamburgers and fish and chips increased over time, Linking Words
while
 that of pizza steadily decreased during the same period. 
 First of all, the number of people who liked hamburgers was uncountable in 1970, because it was around zero. Linking Words
However
, the proportion of it slightly rose to 100 per gram in 1980, Linking Words
then
 it remained at the same level for 5 years. Linking Words
Furthermore
, their popularity skyrocketed for another five years, when around 300 people consumed them. A similar trend happened in fish and chips as well. After the size of a group who enjoyed it grew from under 100 to around 150 over a decade from 1970, it experienced a big growth, which helped it reach 300 and 500 in 1985 and 1990, respectively. Linking Words
Finally
, three hundred Britons ate pizza in 1970, but it dropped to two-thirds of the previous one in 1985, Linking Words
then
 they stayed at the Linking Words
equal
 level for half a decade.Correct word choice
same