Year	MJ/$2011 PPP GDP
1990	4.12210725916144
1991	4.70004051243172
1992	4.32893362244348
1993	4.49618332976289
1994	4.66050623180428
1995	4.6418217347716
1996	4.63229292601779
1997	4.52289620899909
1998	4.61172153893724
1999	4.57628454411281
2000	4.0360784768934
2001	5.07642357328351
2002	4.91555258858945
2003	4.44491124919217
2004	4.32794463707746
2005	4.38842605501005
2006	4.14802019469896
2007	4.36304004251536
2008	5.00209782703849
2009	5.33531493869075
2010	5.40154355355919
2011	5.35437816158238
2012	5.32471268826949
2013	5.22046541493008
2014	5.2682285260819
2015	5.08041965843662