Year Percent 2000 49.71916 2001 49.71916 2002 49.71916 2003 49.71916 2004 49.71916 2005 50.1076 2006 50.1076 2007 50.88446 2008 50.88446 2009 50.76793 2010 50.89999 2011 50.98933 2012 51.0476 2013 50.83785 2014 50.88057 2015 50.98933 2016 50.74889 2017 50.94583 2018 51.10159 2019 51.11441 2020 51.32571 2021 51.58791