Year % (cumulative) 2006 0 2007 0 2008 0 2009 0 2010 0 2011 0 2012 0 2013 0 2014 11.7912397384644 2015 12.0227699279785 2016 12.43284034729 2017 12.4991464614868 2018 11.9414396286011 2019 13.0583467483521 2020 13.3322296142578 2021 12.9632921218872 2022 12.9062004089355