Year % 1993 33.69 2000 9.71 2001 9.69 2002 20.68 2003 9.68 2005 20.17 2006 20.17 2008 20.02 2009 11.63 2010 11.63 2011 11.53 2012 11.49 2013 11.49 2014 11.35 2015 11.41 2016 11.4 2018 11.47 2019 11.42 2020 11.43 2021 11.43