Year	kg of oil equivalent (constant 2011 PPP)
1990	179.27844989661
1991	180.253846663207
1992	175.58078896699
1993	173.24806616959
1994	165.400539936501
1995	164.485319152164
1996	164.26671859501
1997	156.623781007318
1998	153.343174331913
1999	149.021893003501
2000	143.752923940074
2001	142.562636521645
2002	139.841658305708
2003	140.313055022901
2004	136.574107862202
2005	132.554258073298
2006	128.708988912666
2007	122.687160989519
2008	121.382393888076
2009	119.387931419068
2010	122.054527168045
2011	117.954315226697
2012	117.344515723138
2013	114.543127738972
2014	107.806665395551