Reports of the death of the US dollar appear to be greatly exaggerated (like that of author Mark Twain). So, only around 1% of global foreign exchange trading relates to international trade. Most foreign exchange trading is therefore not importers buying foreign currency to purchase goods from their suppliers, nor exporters converting revenue into their home currency. This shows three-quarters of currency trading is concentrated in just four places: London, New York, Singapore and Hong Kong. The US dollar was involved in 90% of foreign exchange transactions in the first survey in 1989 and 89% in 2025.