Year % (cumulative) 2011 3.05580997467041 2012 3.20914006233215 2013 3.11523008346558 2014 3.76830005645752 2015 5.30487012863159 2016 5.45023012161255 2017 5.91620016098022 2018 6.35262012481689 2019 6.6717700958252 2021 6.92283010482788