The structure of world trade of between 28 OECD countries in 1981 and 1992. The size of the nodes gives the volume of flows in dollars (imports and exports) for each country . The size of the links stands for the volume of trade between any two countries. Colors give the regional respectively memberships in different trade organisations: EC countries (yellow), EFTA countries (green), USA and Canada (blue), Japan (red), East Asian Countries (pink), Oceania (Australia , New Zealand) (black).
Structure of trade in 1992 for the same OECD countries as
. The trade volume is deflatet to allow a direct comparison to the 1982