<P> A large part of the U.S. farm workforce is made up of migrant and seasonal workers, many of them recent immigrants from Latin America . Additional laws apply to these workers and their housing which is often provided by the farmer . </P> <P> In 1870, almost 50 percent of the US population was employed in agriculture . As of 2008, less than 2 percent of the population is directly employed in agriculture . </P> <P> In 2012, there were 3.2 million farmers, ranchers and other agricultural managers and an estimated 757,900 agricultural workers were legally employed in the US . Animal breeders accounted for 11,500 of those workers with the rest categorized as miscellaneous agricultural workers . The median pay was $9.12 per hour or $18,970 per year . In 2009, about 519,000 people under age 20 worked on farms owned by their family . In addition to the youth who lived on family farms, an additional 230,000 youth were employed in agriculture . In 2004, women made up approximately 24% of farmers; that year, there were 580,000 women employed in agriculture, forestry, and fishing . </P> <P> From 1999--2009, roughly 50% of hired crop farmworkers in the US were noncitizens working without legal authorization . </P>

Approximately what percentage of the us population is employed in the agribusiness sector
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