Year	MJ/$2011 PPP GDP
1990	6.3390040107546
1991	6.19310239333934
1992	6.11505740120863
1993	5.88339746384558
1994	6.18818031387207
1995	6.32230814708937
1996	6.12750653266126
1997	6.37502024093708
1998	6.65159600544854
1999	5.9607070989436
2000	5.76648222833659
2001	6.05404138171194
2002	6.07101104959113
2003	6.31230250519621
2004	6.40458645726731
2005	6.31222441635506
2006	5.75552653455163
2007	6.36485675615079
2008	6.05657652978111
2009	5.94789597665713
2010	5.87186533800778
2011	6.26973205722235
2012	6.09766011482787
2013	6.01882704442825
2014	6.01468257799163
2015	6.15241325056345