Year kg of oil equivalent (constant 2011 PPP) 1990 168.172321378109 1991 171.204023509964 1992 168.343924976707 1993 165.963817035865 1994 162.436942358896 1995 160.445345525132 1996 155.185523909329 1997 155.326474165462 1998 150.74288455431 1999 147.771287838888 2000 145.678699999667 2001 142.03613204463 2002 140.667561035086 2003 134.902362364631 2004 131.925460042423 2005 127.196414313015 2006 124.070016033848 2007 122.036383806936 2008 123.110208023316 2009 125.150675973698 2010 121.47277609694 2011 120.07233897558 2012 119.028855014736 2013 114.750203859209 2014 113.391964445627