Year % 2002 14.78947 2004 14.6871 2005 8.579237 2006 8.579237 2008 21.25468 2009 21.0512 2010 9.157408 2011 8.857233 2012 8.568681 2013 8.629891 2014 17.74526 2015 17.2777 2016 17.24432 2018 15.19677 2019 15.59646 2020 20.74474 2021 24.3042