Year Percent 2000 97.28089 2001 97.28089 2002 97.28089 2003 97.28089 2004 97.28089 2005 97.35345 2006 97.42601 2007 97.49858 2008 97.57114 2009 97.6437 2010 97.71627 2011 97.61599 2012 97.51547 2013 97.41468 2014 97.31364 2015 97.21234 2016 97.11079 2017 97.00898 2018 96.90691 2019 96.80458 2020 96.702 2021 96.59917 2022 96.49607