Year % (cumulative) 2004 22.8738994598389 2005 24.5464496612549 2006 24.7473106384277 2007 25.2157192230225 2008 25.4806003570557 2009 25.5137195587158 2010 26.2333507537842 2011 27.0493392944336 2012 27.3442306518555 2013 28.6017990112305 2014 29.1039009094238 2015 29.0010795593262 2016 29.3634700775146 2017 30.2490177154541 2018 30.8239707946777 2019 32.1390953063965 2020 32.9433708190918 2021 33.8744506835938 2022 33.9397201538086