Year % (cumulative) 1970 1.89999997615814 2007 18.651330947876 2010 10.7861700057983 2011 10.2719602584839 2012 10.7886600494385 2013 10.8585901260376 2014 11.7863502502441 2015 12.380350112915 2016 21.9709796905518 2017 11.7243194580078 2018 12.7266597747803 2019 13.3362150192261 2020 12.8589019775391 2021 12.9000816345215 2022 17.6953067779541