Year % 2000 77.39970664385005 2001 77.49906931132942 2002 78.84199937670972 2003 79.38746971210007 2004 80.03169963750788 2005 79.40848943543246 2006 81.42891151849986 2007 81.15650644679441 2008 81.46985017741382 2009 83.16459659943847 2010 84.58223569450675 2011 83.02987267954573 2012 83.29335190396934 2013 83.18512251453177 2014 83.37856993593799 2015 83.73851463096845 2016 83.91641832442855 2017 86.44818560550452 2018 86.8423718420459 2019 86.68216116845416 2020 87.2220593170329 2021 87.12702305138275 2022 88.03979616916541