Year % 2002 66.2 2003 66.2 2005 66.68 2006 66.68 2007 66.68 2008 66.68 2009 66.3 2010 66.3 2011 66.3 2012 69.02 2013 69.02 2014 69.02 2015 69.02 2016 69.02 2018 69.4 2019 69.4 2020 69.4 2021 69.4