Year % of total final energy consumption 1990 0 1991 0 1992 0 1993 0 1994 0 1995 0 1996 0 1997 0 1998 0 1999 0 2000 0 2001 0 2002 0 2003 0 2004 0 2005 0 2006 0 2007 0 2008 0.2 2009 0.2 2010 0.4 2011 0.2 2012 0.3 2013 0.7 2014 0.7 2015 3 2016 7.3 2017 7 2018 6.4 2019 6.3 2020 5 2021 5 2022 5.2