Year	kg per 2015 US$ of GDP
1990	1.907881482318325
1991	1.9621395358273273
1992	2.0418599605672267
1993	1.9722975784328491
1994	1.9389264893099531
1995	1.8909069374854501
1996	1.8293696001719055
1997	1.688742297725787
1998	1.6768452833727234
1999	1.620278837207512
2000	1.5384086270920938
2001	1.4964413176789273
2002	1.4379918166865386
2003	1.4104281342284906
2004	1.3076408625004186
2005	1.2317937357063145
2006	1.1890284773658866
2007	1.123371480793387
2008	1.0857183697066946
2009	1.052809043864472
2010	1.054670206646452
2011	1.0445116813812545
2012	0.9951918452670282
2013	0.9424894902661267
2014	0.8908408090090739
2015	0.859633092716561
2016	0.8550726925013015
2017	0.8400137850605522
2018	0.8300272841116162
2019	0.8062725075404586
2020	0.7901955568276953