Based on a comparison of 97 countries in 2017, Venezuela ranked the highest in crude oil reserves as a share of worldwide reserves with 18.2% followed by Saudi Arabia and Canada. On the other end of the scale was Ethiopia with < 0.001%, Morocco with < 0.001% and Jordan with < 0.001%.
Data for more countries are available at Crude Oil Reserves (As % of Worldwide Reserves) indicator page.
| Crude Oil Reserves (As % of Worldwide Reserves) | Unit | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
| Brazil | % | 0.871% | 0.915% | 0.798% | 0.909% | 0.924% | ||||||||||||||||
| Canada | % | 11.9% | 11.4% | 10.5% | 10.5% | 10.4% | ||||||||||||||||
| China | % | 1.38% | 1.33% | 1.44% | 1.47% | 1.49% | ||||||||||||||||
| Iran | % | 9.28% | 9.89% | 9.37% | 9.50% | 9.52% | ||||||||||||||||
| Iraq | % | 7.79% | 9.36% | 8.57% | 8.47% | 8.70% | ||||||||||||||||
| Kazakhstan | % | 2.03% | 1.96% | 1.82% | 1.81% | 1.81% | ||||||||||||||||
| Kuwait | % | 7.05% | 6.80% | 6.31% | 6.28% | 6.27% | ||||||||||||||||
| Libya | % | 3.15% | 3.08% | 2.91% | 2.93% | 2.92% | ||||||||||||||||
| Nigeria | % | 2.52% | 2.43% | 2.26% | 2.24% | 2.24% | ||||||||||||||||
| Qatar | % | 1.72% | 1.66% | 1.54% | 1.52% | 1.52% | ||||||||||||||||
| Russia | % | 4.07% | 3.93% | 4.85% | 4.83% | 4.83% | ||||||||||||||||
| Saudi Arabia | % | 17.8% | 17.5% | 16.2% | 16.2% | 16.2% | ||||||||||||||||
| USA | % | 1.71% | 1.89% | 2.03% | 2.21% | ... | ... | |||||||||||||||
| United Arab Emirates | % | 6.63% | 6.40% | 5.93% | 5.91% | 5.90% | ||||||||||||||||
| Venezuela | % | 14.3% | 13.8% | 18.0% | 18.0% | 18.0% |
Helgi Library 
