<Li> 2004--present </Li> <Tr> <Td> Organisation (show) <Table> <Tr> <Td> European Communities </Td> <Td> (1958--2009) </Td> </Tr> <Tr> <Td> European Coal and Steel Community </Td> <Td> (1952--2002) </Td> </Tr> <Tr> <Td> European Economic Community </Td> <Td> (1958--1993) </Td> </Tr> <Tr> <Td> European Atomic Energy Community </Td> <Td> (1958--present) </Td> </Tr> <Tr> <Td> European Community </Td> <Td> (1993--2009) </Td> </Tr> <Tr> <Td> Justice and Home Affairs </Td> <Td> (1993--2003) </Td> </Tr> <Tr> <Td> Police and Judicial Co-operation in Criminal Matters </Td> <Td> (2003--2009) </Td> </Tr> <Tr> <Td> Common Foreign and Security Policy pillar </Td> <Td> (1993--2009) </Td> </Tr> <Tr> <Td> Western European Union </Td> <Td> (1954--2011) </Td> </Tr> <Tr> <Td> Western Union </Td> <Td> (1948--1954) </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> European Communities </Td> <Td> (1958--2009) </Td> </Tr> <Tr> <Td> European Coal and Steel Community </Td> <Td> (1952--2002) </Td> </Tr> <Tr> <Td> European Economic Community </Td> <Td> (1958--1993) </Td> </Tr> <Tr> <Td> European Atomic Energy Community </Td> <Td> (1958--present) </Td> </Tr> <Tr> <Td> European Community </Td> <Td> (1993--2009) </Td> </Tr> <Tr> <Td> Justice and Home Affairs </Td> <Td> (1993--2003) </Td> </Tr> <Tr> <Td> Police and Judicial Co-operation in Criminal Matters </Td> <Td> (2003--2009) </Td> </Tr> <Tr> <Td> Common Foreign and Security Policy pillar </Td> <Td> (1993--2009) </Td> </Tr> <Tr> <Td> Western European Union </Td> <Td> (1954--2011) </Td> </Tr> <Tr> <Td> Western Union </Td> <Td> (1948--1954) </Td> </Tr> </Table> <Tr> <Td> European Communities </Td> <Td> (1958--2009) </Td> </Tr>

How many nations in the european common market