On the 11th February 2020 The International Energy Agency released their report showing that energy related global carbon emissions were unchanged year on year in 2019 at 33 gigatonnes.
Advanced economies including the US, EU, Australia, Canada, Japan, Korea, Norway, New Zealand, Switzerland, and Turkey saw reductions of 3.4% in 2019 with a total emission figure of 11.3Gt of carbon.
Broken down a little further the EU saw a drop in emissions by 5% with Germany responsible for nearly a third of the drop in emissions to levels not seen since the 1950s.
UK figures were not produced but it is thought to have fallen which would continue a trend that has been set in recent years. A lot of the reductions seen were due to the switching from Coal powered generation to Gas and the significant increases seen in renewable contributions.
However, the crown for 2019 lays with the US who were the largest single country to reduce CO2 emissions by erasing 140Mt equivalent to just under 3%.