Year % of total final energy consumption 1990 5.6992774429996125 1991 5.8648727903528695 1992 6.222632160711026 1993 6.639567046308816 1994 6.876858708971374 1995 6.961657823806351 1996 7.069720803774091 1997 7.36744518761315 1998 7.491940385436574 1999 7.552720029369355 2000 7.61337254150596 2001 7.622940612004085 2002 7.567674568733637 2003 7.692777405062782 2004 7.964529599881005 2005 8.29421598308961 2006 8.566950696966625 2007 9.138588077793093 2008 9.49520592739064 2009 10.43587324508847 2010 10.885345452813539 2011 10.748870118455324 2012 11.601272228939076 2013 12.288853120323044 2014 12.437555857797493 2015 12.87934558725688 2016 12.893646476763651 2017 12.905252233797496 2018 13.48124359230236 2019 14.019677658313858 2020 15.143802576754537