Year % of total final energy consumption 1990 0.5 1991 0.5 1992 0.6 1993 5.3 1994 11.2 1995 10.7 1996 10.5 1997 9.2 1998 9.3 1999 9.4 2000 9.2 2001 8.7 2002 9.5 2003 9.5 2004 6.7 2005 7 2006 7.1 2007 6.9 2008 6.9 2009 8.8 2010 10.1 2011 10.2 2012 10.1 2013 11.2 2014 12.5 2015 13.1 2016 12.4 2017 11.3 2018 11.4 2019 10.9 2020 11.8 2021 11.6 2022 11.7