Year Percent 2000 59.5376 2001 60.64791 2002 61.76496 2003 62.88873 2004 64.01923 2005 65.15645 2006 66.3004 2007 67.45108 2008 68.60849 2009 69.77262 2010 70.94348 2011 72.12107 2012 73.30539 2013 74.49643 2014 75.69419 2015 76.89869 2016 78.10991 2017 79.32786 2018 80.55254 2019 81.78394 2020 83.02207 2021 84.26693 2022 85.51851