The combined CER and ERU surrenders since 2008 have used up roughly 39% of the approximately 1.4 billion credits that are allowed over the 2008-2012 trading period.
Alates 2008. aastast tagastatud THVde ja HVÜde osakaal kokku on umbes 39% neist umbes 1,4 miljardist ühikust, mis on lubatud aastate 2008–2012 kauplemisperioodiks .