Year Percent 2000 92.95581 2001 93.12285 2002 93.32655 2003 93.53039 2004 93.73436 2005 93.93846 2006 94.14269 2007 94.34705 2008 94.55154 2009 94.75617 2010 94.96092 2011 95.16581 2012 95.37083 2013 95.57598 2014 95.78126 2015 95.98667 2016 96.19222 2017 96.39789 2018 98.25089 2019 98.42191 2020 98.59293 2021 98.76395 2022 98.76395