Year % (cumulative) 2000 11.4333171844482 2001 11.7243146896362 2002 12.3293867111206 2003 13.0115299224854 2004 13.7935695648193 2005 13.5266313552856 2006 16.082670211792 2007 15.0928602218628 2008 15.624529838562 2009 16.2650299072266 2010 16.965539932251 2011 17.8658599853516 2012 18.8618106842041 2013 19.0364894866943 2014 20.0858402252197 2015 19.3727207183838 2016 18.8268280029297 2017 18.9358177185059 2018 20.1230392456055 2019 20.0525398254395 2020 20.1864490509033 2021 20.4310703277588 2022 20.3880805969238