- Fossil fuel subsidies accounted for 6.5% of global GDP in 2013 and 2015. "Eliminating subsidies would have reduced global carbon emissions in 2013 by 21% and fossil fuel air pollution deaths 55%, while raising revenue of 4%, and social welfare by 2.2%, of global GDP." http://www.sciencedirect.com/science/article/pii/s0305750x16304867 113 comments science