Year % (cumulative) 2006 0 2007 0 2008 0 2009 0 2010 0 2011 0 2012 0 2013 0 2014 14.9257154464722 2015 15.49147605896 2016 15.4797687530518 2017 15.7016248703003 2018 16.1093082427979 2019 16.1275749206543 2020 16.8905487060547 2021 16.7536354064941 2022 16.2939872741699