How much oil was consumed worldwide since it was started to use massively in the mid 19th century? According to this article from 2015 How much oil is left on Earth

1.5 trillion barrels of crude oil reserves were left in the world by end 2015

But how much oil was already consumed worldwide since it was started to use massively in the mid 19th century? Is it most of it or a small part of it?

PS: I'm not sure if this question is for Earth Science SE or for Economy SE, if you think it's in the wrong SE please move it.
Cumulative world oil production at the end of 2017 was approximately 1.36 trillion barrels.