*NORWAY SEES FEW NATURAL COUNTERPARTIES TO TRADE WITH IN SIZE
*NORWAY WEALTH CAN TAKE TIME TO TRADE AS CHEAPLY AS POSSIBLE
*NORWAY WEALTH FUND CIO GEIR OIVIND NYGARD SPEAKS IN INTERVIEW
*NORWAY SAYS HAS BECOME MORE DIFFICULT TO MAKE LARGE TRADES
*NORWAY WEALTH FUND SAYS COSTS HAVE INCREASED FOR LARGE TRADES