Year % 1993 0 1996 0 2001 50.61993 2002 58.16161 2003 58.85822 2004 58.48495 2005 59.36297 2006 55.67549 2007 56.70054 2008 56.70054 2009 56.37595 2010 55.92387 2011 55.45228 2012 54.07407 2013 54.07945 2014 52.65543 2015 47.42781 2016 48.69428 2017 55.20289 2018 53.03438 2019 52.49055 2020 52.51345 2021 52.51345