Year Percent 2000 19.74518 2001 19.74518 2002 21.98189 2003 24.21861 2004 26.45532 2005 28.69204 2006 30.92875 2007 33.45634 2008 36.02315 2009 38.62921 2010 41.27449 2011 43.95901 2012 46.68276 2013 49.44575 2014 52.24796 2015 55.08942 2016 57.9701 2017 60.89002 2018 63.84917 2019 66.84756 2020 69.88517 2021 72.96202 2022 76.07811