As detailed in its Fifth National Communication, and as part of its commitment under the Copenhagen Accord, in 2010 the United States set a target of achieving economy-wide greenhouse gas emissions reductions in the range of 17 percent below 2005 levels in 2020. The United States achieved and exceeded this target, with net greenhouse gas emissions in 2020 that were 21 percent below 2005 levels. More information on achievement of this target is presented in Chapter 3 of the annexed Biennial Report.