<Tr> <Th> Foreign reserves </Th> <Td> $159.34 billion (1 January 2016) </Td> </Tr> <Tr> <Td_colspan="2"> Main data source: CIA World Fact Book All values, unless otherwise stated, are in US dollars . </Td> </Tr> <P> The economy of the United Kingdom is highly developed and market - oriented . It is the Sixth - largest national economy in the world measured by nominal gross domestic product (GDP), ninth - largest measured by purchasing power parity (PPP), and nineteenth - largest measured by GDP per capita, comprising 3.9% of world GDP . It is the second - largest economy in the European Union by both metrics . </P> <P> In 2016, the UK was the tenth - largest goods exporter in the world and the fifth - largest goods importer . It also had the second - largest inward foreign direct investment, and the third - largest outward foreign direct investment . The UK is one of the most globalised economies, and it is composed of (in descending order of size) the economies of England, Scotland, Wales and Northern Ireland . </P>

Where does the uk economy rank in the world