Year kg of oil equivalent (constant 2021 PPP) 1990 174.4915864613205 1991 176.23369828494478 1992 174.1007341313649 1993 172.68632652038312 1994 169.31038063632306 1995 166.9958643610234 1996 164.7494183160017 1997 159.34815527733278 1998 153.67133763282035 1999 150.59104675936052 2000 148.65936053850302 2001 144.4385024100078 2002 143.3539171874419 2003 140.60280000398248 2004 138.30750142086777 2005 134.3296285484159 2006 129.43906744170206 2007 128.96506158043098 2008 125.8774344055297 2009 123.03506879466242 2010 122.38367445416999 2011 119.46441926278794 2012 115.10483447987838 2013 114.03669208862112 2014 113.09047870559124 2015 108.24975068694073