There's extremely poor data on human trafficking in general, and not even a lot of consensus on what it is. (The legal definition is often at odds with how the

There's extremely poor data on human trafficking in general, and not even a lot of consensus on what it is. (The legal definition is often at odds with how the phrase is used in popular media.) FWIW, New Zealand legalised prostitution fully in 2003, and it seems to have had no negative effects. There was a major review 5 years after the law was passed (so 2008). Safety up, crime down, fewer sex workers on the streets, and at that time, no instances of human trafficking for the sex industry were able to be identified. (Come to that, I'm not sure any have been since either.) Of course, individual laws exist in a larger framework of laws and culture, so it's not always clear that adopting a single law will have the same effects in other jurisdictions. Still, the NZ experience has been almost unremittingly positive.