<Tr> <Td> </Td> <Td> This section may require cleanup to meet Wikipedia's quality standards . The specific problem is: The table in this section presently presents resources rather than reserves, according to SPE definition (February 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> BBL = barrel of oil </P> <Table> Summary of Proven Reserve Data as of 2012 <Tr> <Th>--</Th> <Th> Country </Th> <Th> Reserves 10 bbl </Th> <Th> Reserves 10 m </Th> <Th> Production 10 bbl / d </Th> <Th> Production 10 m / d </Th> <Th> Reserve / Production Ratio years </Th> </Tr> <Tr> <Td> </Td> <Td> Venezuela </Td> <Td> 296.50 </Td> <Td> 47.140 </Td> <Td> 2.1 </Td> <Td> 330 </Td> <Td> 387 </Td> </Tr> <Tr> <Td> </Td> <Td> Saudi Arabia </Td> <Td> 265.40 </Td> <Td> 42.195 </Td> <Td> 8.9 </Td> <Td> 1,410 </Td> <Td> 81 </Td> </Tr> <Tr> <Td> </Td> <Td> Canada </Td> <Td> 175.00 </Td> <Td> 27.823 </Td> <Td> 2.7 </Td> <Td> 430 </Td> <Td> 178 </Td> </Tr> <Tr> <Td> </Td> <Td> Iran </Td> <Td> 151.20 </Td> <Td> 24.039 </Td> <Td> 4.1 </Td> <Td> 650 </Td> <Td> 101 </Td> </Tr> <Tr> <Td> 5 </Td> <Td> Iraq </Td> <Td> 143.10 </Td> <Td> 22.751 </Td> <Td> 3.4 </Td> <Td> 540 </Td> <Td> 163 </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Kuwait </Td> <Td> 101.50 </Td> <Td> 16.137 </Td> <Td> 2.3 </Td> <Td> 370 </Td> <Td> 121 </Td> </Tr> <Tr> <Td> 7 </Td> <Td> United Arab Emirates </Td> <Td> 97.80 </Td> <Td> 15.549 </Td> <Td> 2.4 </Td> <Td> 380 </Td> <Td> 156 </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Russia </Td> <Td> 80.00 </Td> <Td> 12.719 </Td> <Td> 10.0 </Td> <Td> 1,590 </Td> <Td> 22 </Td> </Tr> <Tr> <Td> 9 </Td> <Td> Libya </Td> <Td> 47.00 </Td> <Td> 7.472 </Td> <Td> 1.7 </Td> <Td> 270 </Td> <Td> 76 </Td> </Tr> <Tr> <Td> 10 </Td> <Td> Nigeria </Td> <Td> 37.00 </Td> <Td> 5.883 </Td> <Td> 2.5 </Td> <Td> 400 </Td> <Td> 41 </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Kazakhstan </Td> <Td> 30.00 </Td> <Td> 4.770 </Td> <Td> 1.5 </Td> <Td> 240 </Td> <Td> 55 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Qatar </Td> <Td> 25.41 </Td> <Td> 4.040 </Td> <Td> 1.1 </Td> <Td> 170 </Td> <Td> 63 </Td> </Tr> <Tr> <Td> 13 </Td> <Td> China </Td> <Td> 25.40 </Td> <Td> 4.038 </Td> <Td> 4.1 </Td> <Td> 650 </Td> <Td> 15 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> United States </Td> <Td> 25.00 </Td> <Td> 3.975 </Td> <Td> 7.0 </Td> <Td> 1,110 </Td> <Td> 10 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> Angola </Td> <Td> 13.50 </Td> <Td> 2.146 </Td> <Td> 1.9 </Td> <Td> 300 </Td> <Td> 19 </Td> </Tr> <Tr> <Td> 16 </Td> <Td> Algeria </Td> <Td> 13.42 </Td> <Td> 2.134 </Td> <Td> 1.7 </Td> <Td> 270 </Td> <Td> 22 </Td> </Tr> <Tr> <Td> 17 </Td> <Td> Brazil </Td> <Td> 13.20 </Td> <Td> 2.099 </Td> <Td> 2.1 </Td> <Td> 330 </Td> <Td> 17 </Td> </Tr> <Tr> <Td> </Td> <Td> Total of top seventeen reserves </Td> <Td> 1,540.43 </Td> <Td> 244.909 </Td> <Td> 59.5 </Td> <Td> 9,460 </Td> <Td> 64 </Td> </Tr> <Tr> <Td_colspan="6"> Notes: <Dl> <Dd> 1 Reserve to Production ratio (in years), calculated as reserves / annual production . (from above) </Dd> </Dl> </Td> </Tr> </Table> <Tr> <Th>--</Th> <Th> Country </Th> <Th> Reserves 10 bbl </Th> <Th> Reserves 10 m </Th> <Th> Production 10 bbl / d </Th> <Th> Production 10 m / d </Th> <Th> Reserve / Production Ratio years </Th> </Tr>

Where does most of the worlds oil come from