Year Percent 2000 65.27398 2001 66.34341 2002 67.41284 2003 68.48226 2004 69.55169 2005 70.62111 2006 71.66111 2007 72.70023 2008 73.73847 2009 74.77583 2010 75.81231 2011 76.84792 2012 77.88265 2013 78.9165 2014 79.94947 2015 80.98156 2016 82.01278 2017 83.04312 2018 84.07258 2019 85.10116 2020 86.16444 2021 87.22772 2022 88.291