Year Percent 2000 77.18591 2001 78.52418 2002 79.86246 2003 81.20074 2004 82.53901 2005 83.87729 2006 85.21557 2007 86.55384 2008 87.89212 2009 89.2304 2010 90.56868 2011 91.90695 2012 93.24523 2013 94.58351 2014 95.92178 2015 97.26006 2016 98.59834 2017 99.23664 2018 99.23664 2019 99.23664 2020 99.23664 2021 99.23664 2022 99.23664