Oil still drives many conflicts of today and thusly its production proves a critical factor to consider.
Oil remains the lifeblood of any war effort today as was the case through two World Wars and many conflicts inbetween. Oil drives many facets of the modern military complex including aircraft, vehicles, warships, small arms, and general industry. For the purposes of the GFP ranking, oil production is applied as a bonus to each nation for the higher its production the better effect on the war effort. Oil production is offset by the oil consumption value and this is factored in along with a given nation's proven oil reserves.
The data presented below is through 2018. Presented in bbl/day (Barrels per Day).