There are two climate-related Rio markers: the mitigation marker (established in 1998) and the adaptation Rio marker (since 2010). The Rio Markers are an important tool in increasing transparency and accountability in relation to climate finance. The markers have been used by some OECD countries as the basis for their climate finance reporting to the UNFCCC and in this way can assist in tracking progress towards delivering the commitment by developed countries to provide the USD 100 billion per year in climate finance to developing countries by 2020.