Year Percent 2000 57.32463 2001 57.32463 2002 59.25126 2003 61.20852 2004 63.19641 2005 65.21493 2006 67.26407 2007 69.34385 2008 71.45426 2009 73.59529 2010 75.76696 2011 77.96925 2012 80.20217 2013 82.46573 2014 84.75991 2015 87.08472 2016 89.44016 2017 90.81362 2018 92.18709 2019 93.1213 2020 93.56423 2021 93.99858 2022 94.4246