Year	MJ/$2011 PPP GDP
1990	4.80308018566951
1991	4.81188522594111
1992	4.72263799498667
1993	4.88796137017128
1994	4.55556842873242
1995	4.45964996075079
1996	4.11783234619954
1997	4.13888494484794
1998	4.21243809111092
1999	4.32480301398904
2000	4.15555812813684
2001	4.18118483422462
2002	3.82896246404728
2003	4.11614849109503
2004	3.87284528055754
2005	3.82157358551907
2006	3.78250158408579
2007	3.73116317107796
2008	4.33518165438415
2009	4.28510616932836
2010	4.61248500170512
2011	3.77038667885084
2012	3.88679888643912
2013	4.23143242698042
2014	3.57996226514485
2015	3.75346006759983