Year	MJ/$2011 PPP GDP
1990	7.88896509875702
1991	7.75385888842966
1992	7.7309102820635
1993	7.72578171032823
1994	7.78222675739087
1995	7.82376517731199
1996	7.73787368677466
1997	7.76075190715809
1998	7.83457811127323
1999	7.79392009957062
2000	6.14202561425424
2001	5.94369186540951
2002	5.65338091969576
2003	5.08478955688647
2004	4.81231689685115
2005	4.5044254081037
2006	4.51021705821745
2007	4.32268463997011
2008	3.96056935826005
2009	4.09116711955698
2010	4.1352511667349
2011	3.8705064043815
2012	3.83276275155499
2013	3.73673743676122
2014	3.56853779353492
2015	3.74524032187346