Cameron (1996) shows that for the UK, export to output and import to output ratios are highly correlate across industries. This is not the case for Japan. The pattern of relative export to output ratios finds that electricals, transport, and instruments have high ratios, while food exports are very low. In contrast, food, textiles, and chemicals, as well as instruments have high import to output ratios. Electricals and transport have low relative import to output ratios