Year % (cumulative) 1991 56.3331298828125 2001 71.0187911987305 2003 65.4449310302734 2006 77.9563217163086 2007 77.8855590820312 2008 79.0353164672852 2009 88.5578308105469 2010 87.1520538330078 2011 88.2221450805664 2012 89.2420120239258 2013 90.7916259765625 2014 90.2989120483398 2015 88.1867828369141 2016 90.2934341430664 2017 87.3627471923828 2018 89.883186340332 2019 91.3858413696289 2020 90.4209289550781 2021 90.1386184692383 2022 90.708984375