Essentially, the top ten ranked WT nations get 9 starters each, but as I said above, they must have 9 riders who've scored WT ranking points this season.
The top ten is;
Spain
Colombia
Great Britain
Italy
Netherlands
Australia
France
Poland
Switzerland
Slovakia
Everyone starts with 9 bar GB and Slovakia (who have just 6 riders qualified).
The qualification process is explained, along with the quotas, in this lengthy UCI document;
http://www.uci.ch/Modules/BUILTIN/getObject.asp?MenuId=MTYzMDc&ObjTypeCode=FILE&type=FILE&id=ODg4MTI&LangId=1
Essentially, the top ten ranked WT nations get 9 starters each, but as I said above, they must have 9 riders who've scored WT ranking points this season.
The top ten is;
Spain
Colombia
Great Britain
Italy
Netherlands
Australia
France
Poland
Switzerland
Slovakia
Everyone starts with 9 bar GB and Slovakia (who have just 6 riders qualified).