Year % (cumulative) 2004 25.5006999969482 2005 24.8850708007812 2006 26.4095001220703 2007 28.7180099487305 2008 29.9140605926514 2009 29.426420211792 2010 30.8868808746338 2011 29.8630294799805 2012 34.1045188903809 2013 34.2331199645996 2014 35.2161903381348 2015 34.8284301757812 2016 36.4958114624023 2017 36.5949516296387 2018 37.7905197143555 2019 38.0795402526855 2020 38.6319885253906 2021 41.0855598449707 2022 42.2142448425293