Year	MJ/$2011 PPP GDP
1990	4.82065733001327
1991	4.85607368552218
1992	4.72511612461449
1993	4.61704762963817
1994	4.50785121367358
1995	4.63041434707186
1996	4.46989342761562
1997	4.39744712320738
1998	4.31710230599487
1999	4.3263322512802
2000	4.11172867263701
2001	4.28289776873679
2002	4.29831397951909
2003	4.48997269909971
2004	4.35192790635101
2005	4.51428861231733
2006	4.39962428062103
2007	4.23519602656183
2008	4.13422558918054
2009	4.34361243061799
2010	4.01469964528282
2011	4.05413062038038
2012	4.0692578367891
2013	4.02340346865891
2014	3.85311999350743
2015	3.73852342945458