The provided pie charts compare the primary household expenditure of Australian consumers over a period of 20 years starting from 1970.
Overall, it can be observed that the car, which accounted for largest proportion in 1970, experienced a substantial decrease by 1990 whereas the food followed the opposite trend, increasing markedly to become the largest segment at the end of the period.
Turning to the details, the cars represented the largest share at 45% in the early years, which witnessed a significant drop and reached 23% at the end. In contrast, Food made up 14% of the total initially but experienced a considerable increase and accounted for 44% in the final year.
In addition, the percentage of the electronics increased from 5% to 10%, representing a 50% increase throughout the period. Furthermore, the percentage of household items and restaurants halved, falling from 14% in 1970 to 7% in 1990.
