Year % (cumulative) 2006 33.1933212280273 2007 31.3212242126465 2008 32.9675445556641 2009 34.4110984802246 2010 36.1921501159668 2011 34.4892883300781 2012 38.2633895874023 2013 39.8998947143555 2014 40.6896018981934 2015 41.6958045959473 2016 42.2200508117676 2017 39.6781311035156 2018 43.7900199890137 2019 44.0041999816895 2020 46.1494903564453 2021 48.7983169555664 2022 49.2005310058594