Year % (cumulative) 2006 0 2007 0 2008 0 2009 0 2010 0 2011 18.5654392242432 2012 13.7725563049316 2013 14.7576360702515 2014 18.0583992004395 2015 18.9221496582031 2016 19.6366405487061 2017 20.6823902130127 2018 21.8907604217529 2019 22.8579196929932 2020 23.6204929351807 2021 24.5144329071045 2022 25.8375110626221