The pie chart provides the comparison of employees in town A and town B who working in three different fields between 1960 and 2010. Overall, Manufacturing had the highest employment proportions in City A in 1961, while in 2010 there was a significant shift in the proportion of each sector. Meanwhile, in City B, both in 1961 and 2010, it was manufacturing that had contributed for the largest percentage of workers.
The data shows that in 1961, manufacturing workers dominated the labour sector in City A, accounting for 41% of the workforce. This was followed by sales, which accounted for 30% of the workers. Servicing came in last, with only 25% of workers. These percentages shifted significantly in 2010, with the service sector becoming the most popular, employing 64% of workers, followed by manufacturing with 20%, and sales becoming the sector with the least demand, employing only 16%.
In comparison with City B, manufacturing remained the dominant sector in both 1961 and 2010, with percentages of 70% and 53%, respectively. There was an increase in employment in the service sector from just 10% to 25%, a 2.5-fold rise. Meanwhile, the sales sector remained the least popular, with employment percentages of 20% and 22% in both observation years.