The given graph represents the patterns of employment in America between the time period of 1930 and 2010.
It is evident that in 1930, 75% of the American labour force got employment in farming, fishing and foresting. On the other hand, merely 10% were employed in sales and office and trade. During this time, the industrial and technical sectors comprised only 2% of the workforce. However, a gradual change can be seen in the situation over the next 20 years, except for the technical workforce as it employed threefold people.
Also, by the time 1980 entered, the American employment pattern had undergone a substantial change. While the number of employees in farming, fishing and foresting had declined to 40%, industrial and technical employees saw an upsurge to 13% and 10% respectively.
Likewise, the sales and office sectors didn’t increase until 1980. The most significant change can be seen in 2000 when the proportions of farming, fishing and foresting decreased to 1% while the other three significant sectors increased to more than 20% of the employment.