Year	MJ/$2011 PPP GDP
1990	4.39568846394944
1991	4.38934388683428
1992	4.40456949403721
1993	3.98143320377081
1994	4.47019969963948
1995	4.45047413038881
1996	4.33596015732539
1997	4.47982501650357
1998	4.42426424465185
1999	4.31223862615558
2000	4.38604100713922
2001	4.17813776353404
2002	4.19120885588088
2003	3.97695455774445
2004	3.55030643230399
2005	3.53244538384855
2006	3.30454827702519
2007	3.09834554496182
2008	3.01230737724927
2009	2.92872017530245
2010	2.8419187903562
2011	2.8148393038488
2012	2.89609416300392
2013	2.60565401593374
2014	2.41986980984706
2015	2.45204024490278