 The issue of unintended consequences was raised by critics of the proposed legislation in Sweden in 1996 three years before it took place, namely that it would drive women in prostitution underground, increase the risk of violence, harm the most vulnerable, and be almost impossible to enforce, which some claim has happened.However, the 2003 report stated that one "cannot state with certainty whether there has been an increase of violence [in prostitution]...Some informants speak of greater risks ... few have observed an actual increase ... Police who have studied the occurrence of violence have not found any evidence of an increase...