Year	kg per 2015 US$ of GDP
1990	0.26159971896928863
1991	0.25162377975665984
1992	0.2430493955843801
1993	0.23982507775702114
1994	0.3785840788860165
1995	0.3554671732105294
1996	0.349136139462128
1997	0.35999947599911997
1998	0.3945430934079783
1999	0.354696979693939
2000	0.33192272337615647
2001	0.3365580468478072
2002	0.324335396268768
2003	0.3215291017145071
2004	0.2913480893045622
2005	0.2875223310526514
2006	0.289403350419547
2007	0.3244206248460998
2008	0.3368643305756268
2009	0.39379525739198706
2010	0.40263396273819313
2011	0.39235403025775933
2012	0.38676002706955803
2013	0.3643016683570126
2014	0.41169787949229864
2015	0.4671812385097537
2016	0.573346586552038
2017	0.6130424027840562
2018	0.6107700245393223
2019	0.7614963334944247
2020	0.8101301445216209