“In 2014, there were 1,469 oil and gas firms listed on stock exchanges around the world, with a combined market capitalization of US$4.65 trillion” https://en.

“In 2014, there were 1,469 oil and gas firms listed on stock exchanges around the world, with a combined market capitalization of US$4.65 trillion” https://en.wikipedia.org/wiki/Fossil_fuel https://en.wikipedia.org/wiki/Fossil_fuel