Year % (cumulative) 2004 18.3138103485107 2005 18.1287708282471 2006 18.9986305236816 2007 19.2910709381104 2008 20.1217308044434 2009 20.7471599578857 2010 21.2394199371338 2011 22.2077598571777 2012 23.6669502258301 2013 24.8217792510986 2014 25.1138591766357 2015 26.1267108917236 2016 26.9521999359131 2017 28.1766605377197 2018 27.9994678497314 2019 28.5179100036621 2020 30.9513244628906 2021 35.0027770996094 2022 34.6596260070801