The pie charts represent data regarding working places of workers in different sectors in town A and B over a 50 year period from 1960 to 2010.
Overall,it is clear from the chart that opportunities in the sales sector decreased in both towns.By contrast,manufacturing was the promising sector of employment.The jobs in the service sector saw a fall in town A while it did not happen in town B.
The manufacturing sector grew massively In both town.It had 29% of people working it in 1960 and by 2010 64% of people in town A were employed in it.Town B also witnessed a growth in manufacturing sector from 10% in 1960 to 25% in last year.The sales sector followed a reverse course in both towns.In town A,it dropped from 41% in 1960 to 20% in the final year and it experienced a significant decline at 53% in 2010.The service sector dropped in town A where it decreased from 30% to 16.In town B,it followed a reverse course while it rose minimally to 22% in the final year.