Year	MJ/$2011 PPP GDP
1990	8.41093692643657
1991	8.49491544190687
1992	8.18563988067135
1993	8.02522532938881
1994	7.67027549940062
1995	7.6025799640795
1996	7.28164178848447
1997	7.18886591836718
1998	7.21845801030123
1999	7.14752946785107
2000	7.00206009317496
2001	6.84799666248678
2002	6.82136633526993
2003	6.58385654024934
2004	6.32923037792271
2005	6.09419050557541
2006	5.83574197585886
2007	5.62479932905213
2008	5.51944275340869
2009	5.45107718497759
2010	5.33280027472222
2011	5.1787526393909
2012	5.1053714217213
2013	4.88645119307139
2014	4.81150524623938
2015	4.64095829817026