The pie charts depict the percentage of the population of towns A and B employed in different types of industries in 1960 and 2010.
In 1960, although manufacturing represented a large share of the jobs, town B was more industrialized than town A. While 41% of the population of town A worked in the manufacturing sector, 70% of the citizens of town B were employed in the same sector. In addition, sales accounted for 30% and 20% of the jobs for towns A and B, respectively. Lastly, the percentage of the population working in services was 29% for town A, but merely 10% for town B.
Conversely, both cities experienced considerable changes in the distribution of working sectors by 2010. First, the ratio of the population working in manufacturing decreased for both cities. In 2010, only 20% of professionals of city A were working in manufacturing. Similarly, the ratio of citizens from city B employed in manufacturing dropped to 57%. Additionally, sales employed 14% and 22% of workers in town A and town B in 2010. Finally, the share of jobs in services increased in the period. In 2010, while 64% of people in town A were working in the service sector, 25% were working in the same sector in town B.
In summary, although the manufacturing industry contracted from 1960 to 2010 in both cities, the services sector grew in the same period.