Year % (cumulative) 1992 14.4144096374512 2004 26.9738807678223 2005 27.4067802429199 2006 28.7918491363525 2007 31.2254295349121 2008 31.3428192138672 2009 31.0342903137207 2010 32.870288848877 2011 34.4067993164062 2012 36.7389488220215 2013 36.7883682250977 2014 38.8984489440918 2015 38.544319152832 2016 40.5700416564941 2017 40.4603462219238 2018 41.8295783996582 2019 42.7800369262695 2020 43.1852607727051 2021 45.0436592102051 2022 45.5157012939453