Year % 1996 52.10526 1999 47.98526 2000 18.60692 2007 46.52956 2009 53.4413 2010 53.4413 2011 51.2128 2012 44.12199 2013 44.12199 2018 47.50181 2019 46.55921 2020 46.55921 2021 43.56325