Year % 2004 25.94 2005 25.94 2006 25.94 2007 26 2008 26 2009 26 2010 26 2011 26 2012 26 2013 26.26 2014 26.26 2015 26.26 2016 26.26 2018 26.33 2019 26.33 2020 26.33 2021 26.33