2015
2014
2013
2012
2011
0
0.5
1.0
1.5
Change in gigatonnes of CO2 per year
2015
2014
2013
2012
2011
0
0.5
1.0
1.5
Change in gigatonnes of carbon dioxide per year
2015
2014
2013
2012
2011
0
0.5
1.0
1.5
Change in gigatonnes of carbon dioxide per year
2015
2014
2013
2012
2011
0
0.5
1.0
1.5
Change in gigatonnes of carbon dioxide per year