Year % (cumulative) 2002 14.6317663192749 2005 12.6681928634644 2013 13.2526922225952 2014 13.7770109176636 2015 14.9690341949463 2016 14.3189640045166 2017 15.3708934783936 2018 16.1510696411133 2019 16.5862274169922