Energy Policy: Dutch government advisors: “For a medium chance of achieving 2 °C, Annex I countries would need to reduce its emissions by about 50% below 1990 levels by 2020.”” If Annex I countries as a whole would reduce emissions by 13% to 18% below 1990 levels, as expected from the pledges, the reduction of non-Annex I countries should be 22% to 34% below BAU levels for a medium chance of achieving 2 °C.”