Year % (cumulative) 2004 71.2605133056641 2005 70.5457229614258 2006 70.9299011230469 2007 72.42333984375 2008 73.6714782714844 2009 74.3816909790039 2010 75.1662902832031 2011 75.9607391357422 2012 76.4767303466797 2013 77.0654296875 2014 77.9313430786133 2015 78.3045120239258 2016 78.6063690185547 2017 78.8946762084961 2018 80.1103210449219 2019 79.9674606323242 2020 80.7356796264648 2021 78.2437973022461 2022 78.3953628540039