Year % (cumulative) 2006 0 2007 0 2008 0 2009 0 2010 0 2011 0 2012 0 2013 14.645959854126 2014 15.8994703292847 2015 15.5046997070312 2016 15.3395795822144 2017 16.868860244751 2018 17.0525588989258 2019 17.3121700286865 2020 18.036319732666 2021 19.2391891479492 2022 18.7042598724365