Simplify the following text for a Grade 8 native English-speaking person.
Original: â Annually , according to U.S. Government-sponsored research completed in 2006 , approximately 800,000 people are trafficked across national borders , which does not include millions trafficked within their own countries .
Simplified: According to a study done in 2006 , approximately 800,000 people are trafficked across national borders each year . This does not include millions trafficked inside their own countries .