Year	kg per 2015 US$ of GDP
1990	0.3584788219171242
1991	0.3607848681622859
1992	0.36483945943414153
1993	0.39849785850690045
1994	0.4194911676470608
1995	0.43310153939160617
1996	0.44171001998711373
1997	0.4852678928520142
1998	0.4219370143317428
1999	0.4017460872553631
2000	0.41571988746283556
2001	0.40383659700939545
2002	0.381459034641805
2003	0.44253675789177316
2004	0.4073852561615165
2005	0.3969298340035365
2006	0.5728924460543906
2007	0.5432891654488736
2008	0.6137037888666982
2009	0.6217112634012064
2010	0.5518250427427512
2011	0.5439127073897061
2012	0.5365521816393097
2013	0.5413954699775344
2014	0.5454260686970559
2015	0.49478389609067386
2016	0.5526218130387918
2017	0.5705531516658373
2018	0.5897951609526291
2019	0.5315116605408454
2020	0.7139636847204381