Year Percent 2000 81.72415 2001 81.72415 2002 81.72415 2003 81.72415 2004 81.72415 2005 82.62933 2006 83.53911 2007 84.45349 2008 85.37246 2009 86.29604 2010 87.22421 2011 88.15699 2012 89.09436 2013 90.03633 2014 90.98291 2015 91.93408 2016 92.88985 2017 93.85022 2018 94.81519 2019 95.78476 2020 96.75892 2021 97.73769 2022 97.73769