The world's four biggest oil and gas companies have generated $1.99 trillion in profits in the past three decades
Standfirst ...
1990-99
2000-09
2010-19
$0bn
200
400
600
ExxonMobil Corp. (Total $775.2bn)
Royal Dutch Shell PLC (523.6)
Chevron Corp. (360.6)
BP P.L.C. (331.7)