Year % (cumulative) 2007 9.40495014190674 2008 9.52138996124268 2009 9.71469020843506 2010 9.81418037414551 2011 9.75547981262207 2012 10.9892597198486 2013 11.6185302734375 2014 10.7084503173828 2015 12.7331800460815 2016 12.4157304763794 2017 13.492600440979 2020 12.8836898803711 2021 13.5359401702881 2022 13.0555095672607