The pie charts illustrate the distribution of employment across three fields in town A and town B in 1960 and 2010.
Overall, the percentage of people working in services in town A witnessed the most pronounced increase, surpassing the figures for the other fields in 2010. Also of note is that manufacturing was the predominant occupation in town B.
In 1960, the major workers in town A and B were manufacturers, accounting for 41% and 70%, respectively, compared to 29% and 10% in the services area. 30% of people in town A were employed in sales, exceeding that of town B with a disparity of 10%.
Over the 50 years, the services sector in town A saw a dramatic rise, climbing from 29% to 64%, taking the priority in the entire chart in 2010. Despite experiencing a decrease from 70% to 53%, the proportion of those who were manufacturers in town B remained higher than in the remaining areas. Both sales and manufacturing in town A witnessed a decline in employment, with sales dropping from 30% to 16% and manufacturing falling from 41% to 20% by 2010.