Year % (cumulative) 2001 41.5764312744141 2007 47.1145210266113 2009 42.9949951171875 2010 43.2187957763672 2011 45.0708084106445 2012 45.171760559082 2013 44.8335952758789 2015 48.5200309753418 2017 44.7789916992188 2018 46.1348838806152 2019 48.9161338806152 2020 44.6722106933594 2021 50.9187088012695