The line chart illustrates the labour force employment in economic industrial sectors during the period from 1930 to 2010 in USA. These five economic sectors include industrial sector, sales and office, farming and fishing and foresting, technical sector, and other services.

The line chart illustrates the labour force

employment

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employed

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in economic industrial

sectors

during the period from 1930 to 2010 in

USA

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the USA

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. These five economic

sectors

include

industrial

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the industrial

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sector

, sales and office, farming and fishing and foresting

,

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technical

sector

, and other services.

The employment

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Employment

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in the

sector

of farming, fishing and foresting played a less significant role during

this

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these

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30 years. It had the highest percentage at the beginning, close to 80% in 1930,

then

gradually dropped to 60% in 1970, and after that, dramatically fell close to 1%

in

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at

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the end of the period.  Before 1970,  the employment of three

sectors

( technical, sales and office, and  industrial) presented with zig-zag trends, sitting between 0 to 15%. After 1970, the figure

of

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for

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these

sectors

presented upward trends.

Industrial

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The industrial

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sector

had a sharp increase until 2000 and

then

flatted out close to 40%, the highest percentage among

the

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all

sectors

in 2010. So did

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the sale

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sale

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sales

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and office

sector

, but with

low

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a low

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increase rate, about 35% in 2010, the

third

highest figure. The technical

sector

presented a sharp increase in the

last

30 years with about 35% in 2020.  The

sector

of other services increased at the beginning and peaked in 1940

with

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about 15%. Since

then

, it decreased gradually to about 10% in 1970 and flatted out until the end of the period. Allover,

agricultural

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the agricultural

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sector

has played a less significant role in

USA

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the USA

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 workforce market since 1930 and the two

sectors

(industrial and technical) have become more important daily

with

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occupying about 30% individually.