Year	MJ/$2011 PPP GDP
1990	5.44753280318395
1991	5.69837990787257
1992	5.51240636206998
1993	5.63795068605657
1994	5.30022745820351
1995	5.40804649600304
1996	5.63604373298208
1997	5.3387047960414
1998	5.30525458900133
1999	5.12201148310623
2000	4.97920897917369
2001	5.05091109835806
2002	5.00716538154063
2003	5.0556274959923
2004	4.99064323415997
2005	4.93206864531416
2006	4.74010541942815
2007	4.57793635586042
2008	4.58910194670539
2009	4.52464752958569
2010	4.57721334867775
2011	4.31528298948888
2012	4.31659316435746
2013	4.31050153437464
2014	4.08202291575321
2015	4.10185369917219