Year % of total final energy consumption 1990 64.8 1991 59.8 1992 57.7 1993 56.1 1994 56.5 1995 55 1996 51.8 1997 53.2 1998 52.6 1999 52 2000 54 2001 51.6 2002 51.3 2003 50.2 2004 50.3 2005 49.9 2006 50.8 2007 53.4 2008 53 2009 55.1 2010 52.3 2011 55.3 2012 55.5 2013 53.5 2014 55 2015 55.5 2016 55.8 2017 55.3 2018 56.8 2019 56.1 2020 55.2 2021 53.6 2022 56.9