Year % 1993 24.87 2000 11.54 2001 9.85 2002 21.8 2003 10 2005 15.37 2006 14.22 2008 12.82 2009 9.94 2010 11.11 2011 7.79 2012 18.33 2013 15.41 2014 16.44 2015 18.16 2016 7.3 2018 5.6 2019 11.96 2020 14.83 2021 23.54