During the past 20 years, estimates of oil reserves have increased nearly every year due to new discoveries and technological advances, even as we consume more gasoline with every passing year.
(estimates of oil reserves; have increased; T:nearly every year due to new discoveries and technological advances; T:During the past 20 years)
estimates of oil reserves
have increased
T:nearly every year due to new discoveries and technological advances T:During the past 20 years