Year kg of oil equivalent (constant 2011 PPP) 1990 156.939918196062 1991 160.996537932285 1992 160.316562437839 1993 158.04523843628 1994 162.471664255794 1995 161.518536786457 1996 167.424845388923 1997 161.445732233872 1998 160.946273420925 1999 156.030739956594 2000 152.448657968629 2001 150.801831463262 2002 142.397433614035 2003 147.142158446541 2004 142.672733308378 2005 139.577929191585 2006 134.966338149791 2007 128.220144302309 2008 131.060907194689 2009 128.769898773107 2010 134.826543001279 2011 123.347968210051 2012 117.822732673008 2013 121.84776583518 2014 113.877437123681 2015 112.092165655787