Year	MJ/$2011 PPP GDP
1990	4.90392202476362
1991	5.36429374785217
1992	5.56242957059777
1993	6.25069531349565
1994	5.78825337200643
1995	5.58893493814742
1996	5.44894218695662
1997	5.40362349772725
1998	5.48051041079344
1999	5.46575071116847
2000	5.07088036922962
2001	5.08881475728877
2002	4.97432128441081
2003	5.055451803043
2004	4.85503863307006
2005	4.73094098473153
2006	4.48979304336948
2007	4.43997016697741
2008	4.24152253119496
2009	4.42846185232749
2010	4.45079416637612
2011	4.35635510059775
2012	4.19191027847269
2013	4.14808260160476
2014	3.94615791704342
2015	4.05307604349478