Year Percent 2000 87.06283 2001 87.05799 2002 87.06474 2003 87.07764 2004 87.09044 2005 87.3411 2006 87.59025 2007 87.83776 2008 88.0837 2009 88.32824 2010 88.57139 2011 88.81321 2012 89.05407 2013 90.11088 2014 91.16885 2015 92.228 2016 93.28829 2017 94.34969 2018 95.41251 2019 96.42283 2020 97.39665 2021 98.27202 2022 99.03761