Year % (cumulative) 2004 26.3001708984375 2005 26.9092102050781 2006 27.2906703948975 2007 27.7211494445801 2008 28.417839050293 2009 28.7650299072266 2010 29.2667808532715 2011 30.0058097839355 2012 33.0835266113281 2013 33.7266464233398 2014 33.8793983459473 2015 34.5020599365234 2016 34.9901695251465 2017 35.5531997680664 2018 38.0467071533203 2019 36.2407684326172 2020 38.2662582397461 2021 38.7544860839844 2022 38.8105621337891