Due to the "hidden" nature of human trafficking activities, trying to gather statistics on the magnitude of this problem is a difficult task. The following stats are guesstimates that I have come across by doing a little internet research.
Estimated 600,000 to 800,000 people are trafficked across international borders each year. This number does not include people trafficked within their own country every year. Look at it this way, 200,000 U.S. citizens fall victim to human trafficking within U.S. borders every year. That number is terrifying! Of the 600,000 to 800,000 people trafficked across international borders 70% are female and 50% are children. Each year estimated 14,500 to 17,00 foreign nationals are trafficked into the U.S.! The largest number of people trafficked into the U.S. come from East Asia and the Pacific 7,000 to 5,000 victims. Latin America and Europe 5,500 to 3,500 victims.