Year	MJ/$2011 PPP GDP
1990	4.34213774915141
1991	4.60930499102914
1992	4.47388430793945
1993	4.38615553153607
1994	4.38043605849347
1995	4.37778939610134
1996	4.1137146645097
1997	4.36719112083011
1998	4.33008825445853
1999	4.34328184233125
2000	4.44815934654766
2001	4.57551468715751
2002	4.55823881459261
2003	4.65134341865737
2004	4.52965852444522
2005	4.49984006343953
2006	4.54802605960558
2007	4.14344143531457
2008	4.10875368769771
2009	3.97282520210981
2010	3.95419805321166
2011	3.90581407989428
2012	3.77472510679726
2013	3.49897144221351
2014	3.51645445558811
2015	3.64926895258607