Year % (cumulative) 2001 5.66422986984253 2002 6.22902488708496 2005 7.83303499221802 2008 8.11303043365479 2011 11.4996995925903 2012 12.3950004577637 2013 12.5608339309692 2014 12.6453409194946 2015 14.6553077697754 2016 14.3125848770142 2017 15.5377817153931 2018 17.5009250640869 2019 18.7589302062988