The given pie charts illustrate patterns of expenditures between 1966 and 1996 in the United State.
Overall, In Usa, individuals spent more money on food, which reached more two-fifths at the beginning of the year. In other hand, spending on car was less than spending on food in 1966, but after 30 years, expenses on a car took the leading position in which this figure overtook food expenses by 1996.
Referring to the details, in 1966, food accounted for the largest proportion of expenditure at 44%, followed by cars at 23%. Furthermore, petrol made up 9% of spending, while restaurants and furniture represented 7% and 10% respectively. Computers and books had the smallest shares, with books at 6% and computers at just 1%.
By 1996, spending patterns had shifted significantly. Cars became the dominant category, rise to 45%, while food spending dropped sharply to 14%. However, furniture expenses remained stable at 8%, whereas computers showed a notable rise to 10%. In contrast, book expenditures fell significantly from 6% to just 1% in 1996, remained the smallest share of total spending among all listed categories.