Year % (cumulative) 2006 0 2007 0 2008 0 2009 0 2010 0 2011 0 2012 0 2013 0 2014 11.4068975448608 2015 12.6582708358765 2016 13.3697299957275 2017 14.2777585983276 2018 14.8363494873047 2019 14.9894161224365 2020 15.8031673431396 2021 16.5569877624512 2022 16.4359912872314