Year % (cumulative) 2001 57.8640289306641 2006 62.8856582641602 2007 65.1368103027344 2008 65.8481292724609 2009 66.6328430175781 2010 67.9579696655273 2011 68.8686981201172 2012 70.5619888305664 2013 72.1499099731445 2014 72.5128173828125 2015 73.658447265625 2016 74.3325271606445 2017 75.3367691040039 2018 75.9584121704102 2019 76.0672836303711 2020 76.862907409668 2021 77.2050323486328 2022 78.0354843139648