Year % 1993 25.57 2000 7.37 2001 6.18 2002 19.1 2003 7.49 2005 13.67 2006 11.69 2008 12.93 2009 6.64 2010 6.8 2011 6.42 2012 6.87 2013 6.8 2014 6.76 2015 6.78 2016 7.33 2018 3.69 2019 7.82 2020 7.72 2021 7.07