Year % (cumulative) 2000 20.3984394073486 2005 22.7670402526855 2006 23.2177448272705 2007 23.0604000091553 2008 24.6121559143066 2010 25.8695793151855 2011 27.3733997344971 2012 32.4356994628906 2013 34.4804992675781 2014 35.774730682373 2015 36.9077987670898 2016 38.0723686218262 2017 43.7824783325195 2018 45.2157211303711 2019 48.5946006774902 2020 48.2728614807129 2021 53.1921730041504 2022 55.2392654418945