Ozone Depleting Emissions – as CFC-11 Equivalents M et ri c To ns p er Y ea r 250 200 150 100 50 0 20152014201320122011201020092008200720062005 2016 2017 2018 6 Ninety-seven percent of ozone-depleting emissions have been eliminated since 2005 as gases identified by the Montreal Protocol have been phased out.