This is a well-studied subject and the answer is - not as much as you’d expect, and actively declining since 2005. https://ourworldindata.org/consumption-based

This is a well-studied subject and the answer is - not as much as you’d expect, and actively declining since 2005. https://ourworldindata.org/consumption-based-co2 https://ourworldindata.org/consumption-based-co2