Year	MJ/$2011 PPP GDP
1990	4.36014723139158
1991	4.48739879458856
1992	4.22335241660898
1993	4.24931064428913
1994	4.13839119075488
1995	4.21065126305913
1996	4.37001446181663
1997	4.24469509847955
1998	4.16823862936917
1999	4.01507657005946
2000	3.87048993881445
2001	4.03536861601601
2002	4.00534217522615
2003	4.20638108585415
2004	4.15625904302268
2005	4.1767055310378
2006	4.05461916275118
2007	3.86861902978625
2008	3.83355761279665
2009	3.76353648391696
2010	3.94779679994556
2011	3.729968115564
2012	3.68553604791994
2013	3.72613854340345
2014	3.55563811360114
2015	3.60837670799345