The provided pie charts depict the spending patterns in America from 1966 to 1996.
Food and cars constituted a significant portion of the total expenditure, accounting for roughly two thirds of the total budget. Specifically, spending on food underwent a significant decline, dropping from 44% in 1966 to 14% in 1996. Conversely, car spending more than doubled from 23% to 45% throughout the same period, becoming the largest expenditure category in 1996.
Expenses on other items exhibited a noticeable shift, with remarkable rise in the demand for dining out and computers as well as the the sharp decline in books. Dining out increased substantially from 7% in 1966 to 14% in 1996. Likewise, computer spending climbed to 10%, a sharp increase from a near zero in 1966. By contrast, the demand for books dropped to 1% in 1996, a significant fall from a higher percentage 30 years ago. Meanwhile, expense on petrol and furniture varied insignificantly between 8% and 10%.
In conclusion, while food and cars remained dominant expenditure categories, changes occurred in other items. The sharp rise in dinning out and computers contrast with the dramatic fall in the demand for books, while petrol and furniture underwent a period of stability. The changes reflect changing consumer priorities and computer advancements over the course of thirty years.