Year % 2006 8.64197530864197 2007 11.1111111111111 2008 11.1111111111111 2009 11.1111111111111 2010 11.1111111111111 2011 12.3456790123457 2012 17.2839506172839 2013 16.0493827160494 2014 17.2839506172839 2015 17.2839506172839 2016 23.4567901234568 2017 23.4567901234568 2018 23.4567901234568 2019 28.3950617283951 2020 22.2222222222222 2021 24.6913580246914 2022 27.1604938271605 2023 20.9876543209877