Year	MJ/$2011 PPP GDP
1990	5.46012940982267
1991	5.32913096820188
1992	5.27022415381602
1993	5.44234478903556
1994	5.46181907841161
1995	5.43487172394188
1996	5.4553276547344
1997	5.54413272128116
1998	5.52327511144911
1999	5.62593931334963
2000	5.54025145137835
2001	5.52117877280807
2002	5.40880530898006
2003	5.39291390982465
2004	5.38477291053529
2005	5.1859515656512
2006	5.08810496144956
2007	5.11362727849871
2008	4.94367627417617
2009	4.87983156850528
2010	4.87211626720081
2011	4.77746601054816
2012	4.6689875457403
2013	4.58216155222553
2014	4.53627480631908
2015	4.42216271628902