Kajsa Wahlberg is Sweden's national rapporteur on human trafficking opposition activities. She holds the title of Detective Inspector, and serves on the Swedish Police Authority's human trafficking unit, of which she is the head. Wahlberg estimated that the number of prostitutes in the country dropped 40% between 1998 and 2003 because of Sweden's passing of the 1999 Kvinnofrid law that made selling sex legal, but buying sex illegal. In 2005, she said that the effectiveness of the Kvinnofrid law is limited by the fact that not all of the country's police authorities make enforcing this particular law a priority, with many police authorities allocating more of their resources to combat the illegal drug trade. In 2008, she said that large numbers of foreign politicians and law enforcement off