Based on a comparison of 32 countries in 2014, USA ranked the highest in petroleum stocks with 1,839 mil barrels followed by Japan and Germany. On the other end of the scale was Luxembourg with 0.728 mil barrels, Estonia with 1.57 mil barrels and Slovenia with 4.69 mil barrels.
Total petroleum stocks reached 3,608 mil barrels in 2014 in the World according to EIA. This is 14.4 % less than in the previous year and -9.70 % less than 10 years ago.
Historically, total petroleum stocks reached an all time high of 4,207 mil barrels in 2010 and an all time low of 959 mil barrels in 1972. The average annual growth amounted to 2.92 % since 1970.
The top ranked country, USA, accounted for 51.0 % of petroleum stocks in the world. The top 3 countries hold a 74.9 % share while the ten largest countries some 102 % in 2014.
Data for more countries are available at Total Petroleum Stocks indicator page.