On MDB finance (concessional and non-concessional) flowing to climate change is the most difficult to estimate because there is comprehensive data set from which to draw and available estimates are now dated. Drawing on World Bank (2006), it is estimated that just over 4 bn USD flows to support climate action, remaining constant as what was reported in 2006-7, this is considered to be a minimum estimate. Export-credits vary widely from year to year, for this reason the authors use an average year estimate, drawing on data from 2002-2009, the low estimate of mitigation flows is estimated to be about 0.2 bn USD. Total funds pledged for adaptation are estimated to amount to $1 billion, of which a little over half has been committed.