Year % (cumulative) 2005 12.5310401916504 2007 12.0824499130249 2008 10.8792295455933 2009 13.985050201416 2010 14.4146995544434 2011 14.2032699584961 2012 14.7431497573853 2013 15.5813598632812 2014 23.1128692626953 2015 23.7619495391846 2016 24.9500694274902 2017 25.8067607879639 2018 26.1055221557617 2019 27.4423904418945 2020 27.7776699066162 2021 28.4911193847656