Year	MJ/$2011 PPP GDP
1990	2.2371797226775
1991	2.26499528464064
1992	2.50375017119373
1993	2.69769319798135
1994	3.06184185654705
1995	3.48674278989951
1996	3.48277133051914
1997	3.26522032331162
1998	3.05791558126225
1999	3.15358730780194
2000	3.11821699317465
2001	3.49510311638148
2002	3.12742313543483
2003	3.28247370006174
2004	3.04472479774625
2005	3.14419744325568
2006	2.93170796977049
2007	3.01777473185114
2008	3.01771262223084
2009	2.94908603814959
2010	3.14066087551993
2011	3.16691305176071
2012	3.18525048710147
2013	3.17244454501202
2014	3.18699699292382
2015	3.18626739415913