Year % 2001 0.0189143 2004 0.3748828 2005 0.8364312 2006 0.6972477 2007 0.5350773 2008 0.6860158 2009 0.9352518 2010 0.8843036 2011 0.9035172 2012 0.6060606 2013 0.1161845 2014 0 2015 0.2036878 2016 0.3685384 2017 0.1957849 2018 0.2447414 2019 0.2438381 2020 0.181889 2021 0.1728075