<Table> <Tr> <Th colspan="2"> Organization of the Petroleum Exporting Countries ( OPEC ) </Th> </Tr> <Tr> <Td colspan="2"> Flag </Td> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> <Tr> <Th> Headquarters </Th> <Td> Vienna , Austria </Td> </Tr> <Tr> <Th> Official language </Th> <Td> English </Td> </Tr> <Tr> <Th> Type </Th> <Td> International cartel </Td> </Tr> <Tr> <Th> Membership </Th> <Td> 14 states ( May 2017 ) ( show ) <Ul> <Li> Algeria </Li> <Li> Angola </Li> <Li> Ecuador </Li> <Li> Equatorial Guinea </Li> <Li> Gabon </Li> <Li> Iran * </Li> <Li> Iraq * </Li> <Li> Kuwait * </Li> <Li> Libya </Li> <Li> Nigeria </Li> <Li> Qatar </Li> <Li> Saudi Arabia * </Li> <Li> United Arab Emirates </Li> <Li> Venezuela * </Li> <Li> * founding member </Li> </Ul> </Td> </Tr> <Tr> <Th colspan="2"> Leaders </Th> </Tr> <Tr> <Th> Secretary General </Th> <Td> Mohammed Barkindo </Td> </Tr> <Tr> <Th> Establishment </Th> <Td> Baghdad , Iraq </Td> </Tr> <Tr> <Th> Statute </Th> <Td> September 1960 </Td> </Tr> <Tr> <Th> In effect </Th> <Td> January 1961 </Td> </Tr> <Tr> <Th> Currency </Th> <Td> Indexed as USD per barrel ( US $ / bbl ) </Td> </Tr> <Tr> <Td colspan="2"> Website OPEC.org </Td> </Tr> </Table>
how many countries are a part of opec
14