But across the board in all of the cities where matches were played, police said they did not see any increase in forced prostitution, or in visits to the legal brothels either.

Most cities said it was business-as-usual, while Nuremberg reported a 10 percent increase in legal prostitutes and Munich reported a sharp spike at the beginning of the tournament, which kicked off June 9, only to see it trail off quickly.

"At the start of the World Cup we saw an increase of 50 to 60 percent registered" prostitutes said Peter Breitner, of the city police's organized crime division. But, he added: "Most of the women went back home, and we're now back to normal levels. Many tourists and families from all around the world are traveling to Germany, but they're not coming here to visit a bordello in Munich."

Helwerth said that it is too early to tell exactly how many prostitutes came in from outside the country.

"We have different information from different places, the prostitute circles say there was no greater number, but the businesses say they've had a lot more women, mostly from eastern Europe, asking them to work there," she said.

She also questioned the assertion that there was no increase in forced prostitution, noting that many police agencies said they conducted no special raids to check papers.

"We know that forced prostitution and human trafficking are crimes that one can only find when one is looking for them," she said. "The picture is very sketchy."

Some brothels have reported almost no customers on game days, but for Artemis,within walking distance of Olympic Stadium, which seats some 75,000 and features a nearby outdoor viewing area that has regularly attracted another 20,000, the matches have been a boon.

"It has worked out well," Vanessa said. "We carry the games live in our erotic cinema and quite a few of our guests watch them from there."