Year % (cumulative) 2001 32.1178512573242 2002 35.8272476196289 2005 37.1404647827148 2008 35.2928810119629 2011 38.7253799438477 2012 44.4915008544922 2013 38.7752723693848 2014 40.7960166931152 2015 43.4481582641602 2016 41.9374923706055 2017 42.2201995849609 2018 45.2219161987305 2019 46.0620880126953