The share of climate-related ODA has grown from 4% of total bilateral ODA in 2005 to 19% in 2014 (OECD, 2016b). Research carried out for this report drawing on data for bilateral ODA commitments, finds that it is very difficult to prove or disprove that the increasing volume of climate-related aid is reducing the volumes of aid available for other activities (see Figure 7). Figure 7 also includes ODA for general environmental protection and energy in order to allow for a comparison with sectors that are generally linked with higher shares of climate ODA.