The given diagram demonstrates the past changes in terms of employment of three particular economic industries in the USA since 1975 and their anticipation until 2030, recorded in millions.
Looking from an overall perspective, all the surveyed fields have and will continue to witness wild fluctuations in the number of employees over the given period. However, it is also noteworthy that while the figures for services and agriculture are predicted to have the dramatic chance of their records in 2005, manufacturing seems to be stable as the start moment.
More specifically, in 1975, agriculture attracted the highest number of employees, at 80 millions, which is eight times as high as that of both manufacturing and services. Looking to 80s, while agriculture remained almost stable in a short time and then shrank consistently to 40%; the others ascended gradually to 40%, especially manufacturing reached its highest point in this moment.
Regarding the rest of the given period, the number of service workers had been and will increase continuously, peaking at 90 millions. Conversely, manufacturing and agriculture simultaneously plummet remarkably and hit a low a 10 million workers.