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October 2005, Volume 11, Number 4

Legal and Unauthorized Immigration, Annual Averages, 1980-2004

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Mexico's population doubled from about 50 million to 100 million between 1970 and 2000, while the number of Mexican-born US residents increased 12 fold, from 750,000 to nine million. Since 1995, unauthorized Mexico-US migration has been at unprecedented levels.