Year % (cumulative) 2004 20.6154804229736 2005 22.2828693389893 2006 22.701789855957 2007 23.3087100982666 2008 23.6674900054932 2009 24.3787403106689 2010 25.1932106018066 2011 26.0097808837891 2012 26.6198406219482 2013 28.2599258422852 2014 28.8613204956055 2015 29.5635604858398 2016 30.2787990570068 2017 31.0634078979492 2018 31.4773197174072 2019 33.2948608398438 2020 34.1020889282227 2021 35.8322830200195 2022 36.4175987243652