Normally yes, but when I'm not the only one with a port and no ships of mine being present in the North Sea, it's hard to have the importing douane income exceed the money another faction like England makes by exporting. Only explanation is that you also score the points if absolutely no trading takes place at all, neither from your side nor from other factions. But I've never seen the Hanseatic League GA dots not being red, even on AI controlled factions. Before VI, it sometimes was that way and people thought this was another of the broken GAs...