U.S. baby boomlet bucks world trend

• Story Highlights
• U.S. reports that 2006 saw largest number of children born in 45 years
  
• Nearly 4.3 million births due mostly to a bigger population, especially Hispanics
  
• Suggested reasons: decline in contraceptive use, less access to abortion, poverty
  
• 2006 fertility rate of 2.1 children per woman is highest since 1971
  
  
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