Year % 2005 40.23579 2006 41.33217 2007 45.47677 2008 45.47677 2009 46.81856 2010 45.3066 2011 47.49505 2012 46.66476 2013 44.65731 2015 44.24161 2019 41.97739 2020 45.64369 2021 46.63144