Sorry to respond in English, but my German is not so good.
Just wanted to point out that the considering world Records the rules is that they can only be made in a WMF or EMF or Continental Championships. In Sweden, Stefan Björk have made the amazing result of 18 on concrete, but since it does not count the tournament was not valid. Also an 18 has been made by Magnus Andersson at an indoor felt course.
All the current World Records can be found here.
http://web.telia.com/ ~ u82908832/worldrecords.htm