Year	MJ/$2011 PPP GDP
1990	4.25125488611471
1991	4.65370916490965
1992	4.36667339043142
1993	4.48812908797726
1994	4.40220813346432
1995	4.2317852274737
1996	4.65340420971944
1997	4.1757070118131
1998	4.01893489681499
1999	3.74084909229811
2000	3.5042863557831
2001	3.58245373751692
2002	3.5284708094884
2003	3.71648284317897
2004	3.50305550599413
2005	3.32472529338116
2006	3.4352987865801
2007	3.32543847688778
2008	3.25660990310414
2009	3.27984727988027
2010	3.41858190447705
2011	3.12234696616071
2012	3.00183453056671
2013	3.054735339604
2014	2.65096503958139
2015	2.60694961697757