Year % 2001 51.77975 2002 50.52211 2003 53.94223 2004 55.35073 2005 56.90873 2006 51.49033 2007 51.29461 2008 51.29461 2009 51.7664 2010 53.21161 2011 52.08076 2012 50.328 2013 50.37886 2014 52.05613 2015 44.534 2016 43.5998 2017 54.48882 2018 52.04973 2019 49.2259 2020 48.91796 2021 48.2965