Year kg of oil equivalent (constant 2011 PPP) 1990 149.708419101554 1991 156.204062560959 1992 153.582156268385 1993 147.395280282575 1994 152.686927891137 1995 152.87273031885 1996 150.670549347367 1997 157.349638309496 1998 163.084730684287 1999 144.446577061118 2000 137.730061821357 2001 144.598294203495 2002 145.003607757503 2003 150.766755163758 2004 152.970919491433 2005 150.76489004383 2006 137.468389570833 2007 152.021991882841 2008 144.658845174862 2009 142.063054759175 2010 140.247094153238 2011 149.749977482143 2012 145.640109745578 2013 143.757214207229 2014 143.658225327019