Year Percent 2000 59.75554 2001 60.87561 2002 61.99899 2003 63.19138 2004 64.43399 2005 65.67368 2006 66.91111 2007 68.14567 2008 69.3772 2009 70.60515 2010 71.83009 2011 73.05145 2012 74.26875 2013 75.48214 2014 76.69145 2015 77.89879 2016 79.10338 2017 80.30527 2018 81.5034 2019 82.69753 2020 83.8869 2021 85.07123 2022 86.24977