Year % (cumulative) 2004 30.2351398468018 2005 31.2718391418457 2006 32.2264099121094 2007 33.1449813842773 2008 30.5629692077637 2009 31.3844699859619 2010 32.198860168457 2011 32.9946899414062 2012 33.7964515686035 2013 34.5622291564941 2014 35.2922897338867 2015 36.0053482055664 2016 36.7444305419922 2017 37.4906616210938 2018 47.2373657226562 2019 38.9976501464844 2020 49.7365684509277 2021 48.8162879943848 2022 50.111686706543