Year	MJ/$2011 PPP GDP
1990	5.03147197449383
1991	4.91785542506093
1992	4.99219592963809
1993	5.0160037393887
1994	5.24384101364639
1995	5.27762127793716
1996	5.25137087087074
1997	5.22348106254592
1998	5.23162416473773
1999	5.3254666911116
2000	5.31104310975785
2001	5.2068393264808
2002	5.18274319690768
2003	5.05813737484608
2004	5.09948122042995
2005	5.01557333421853
2006	4.92415637807909
2007	4.7750032526997
2008	4.64206127159012
2009	4.68392282262269
2010	4.73517346493524
2011	4.40351657814238
2012	4.23330585516314
2013	4.20630372220914
2014	3.87124396418894
2015	3.74238616904232